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Journal articles on the topic 'Digital cadastral map'
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1
Cvijetinovic, Z., M. Avramovic, and D. Mihajlovic. "Digital cadastral map as foundation of coordinate based cadastre of Serbia." Survey Review 47, no. 343 (September 23, 2014): 241–55. http://dx.doi.org/10.1179/1752270614y.0000000131.
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Hashim, N. M., A. H. Omar, K. M. Omar, N. M. Abdullah, and M. H. M. Yatim. "CADASTRAL POSITIONING ACCURACY IMPROVEMENT: A CASE STUDY IN MALAYSIA." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W1 (September 30, 2016): 265–70. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w1-265-2016.
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Cadastral map is a parcel-based information which is specifically designed to define the limitation of boundaries. In Malaysia, the cadastral map is under authority of the Department of Surveying and Mapping Malaysia (DSMM). With the growth of spatial based technology especially Geographical Information System (GIS), DSMM decided to modernize and reform its cadastral legacy datasets by generating an accurate digital based representation of cadastral parcels. These legacy databases usually are derived from paper parcel maps known as certified plan. The cadastral modernization will result in the new cadastral database no longer being based on single and static parcel paper maps, but on a global digital map. Despite the strict process of the cadastral modernization, this reform has raised unexpected queries that remain essential to be addressed. The main focus of this study is to review the issues that have been generated by this transition. The transformed cadastral database should be additionally treated to minimize inherent errors and to fit them to the new satellite based coordinate system with high positional accuracy. This review result will be applied as a foundation for investigation to study the systematic and effectiveness method for Positional Accuracy Improvement (PAI) in cadastral database modernization.
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Zeng, Zhen Hua. "The Primary Exploration for the Using of South CASS7.0 Mapping System Drawing Profile Map." Advanced Materials Research 243-249 (May 2011): 26–31. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.26.
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Southern surveying and mapping instruments company CASS terrain, cadastral mapping software is based on AutoCAD platform technology of digital mapping data acquisition system. Widely used to terrain mapping, cadastral mapping, engineering survey three major areas of application, by using terrain mapping, cadastral mapping software of CASS7.0,the author explored a method about using terrain mapping, cadastral mapping software of CASS7.0 to drawing profile map, through the application for line project theoretical and practical research to achieve the desired effect, solved the problem by using terrain mapping, cadastral mapping software of CASS7.0.
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KAZACHENKO, L., R. CHUBUKIN, and V. KAZACHENKO. "GIS-technologies in the creation of planned geodesic basics for developing a general plan of a population." Modern achievements of geodesic science and industry 42, no. II (September 1, 2021): 67–75. http://dx.doi.org/10.33841/1819-1339-2-42-67-75.
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Purpose. The application of geodetic measuring systems and geodetic software in creating a planned geodetic basis for establishing the boundaries of the settlement or expanding its boundaries requires a modern cartographic basis in digital form and created a master plan. Methodology. This is achieved through geodetic measurements and computer processing of their results. GIS technologies and remote sensing in this case help to solve the problem quickly, accurately, efficiently and with the least time and money. Old cartographic materials, according to which geodetic surveys were carried out and which served as a basis for obsolete, do not meet modern requirements for the creation of cartographic products. Therefore, there is a need to update cartographic materials in new digital formats and enter in the created database of the State Land and Urban Cadastre, ie to fill the state cadastral system with information layers. The created information layers of the Public cadastral map and the Digitals software simplify the solution of problems of geodesy, cartography and land management. Entering information into the databases of the State Geocadastre and Urban Cadastre requires the creation of modern digital cartographic materials and electronic documents. DBNs adopted in Ukraine dictate certain requirements for the creation and design of appropriate cartographic materials for the development of Master Plans of settlements. Results. Geodetic surveys were performed on the research territory by electronic measuring systems and the results of measurements in the software were processed. The constructed plan-height substantiation of the territory of the settlement made it possible to create a digital map (model) of the area – CMM in a very short time. Scientific novelty. Such Digital maps are the basis for the creation of various cartographic materials in electronic form and can serve various purposes of the national economy. Such digital maps with the help of GIS technologies can be the filling of electronic resources of different industries and serve to fill different types of information about certain objects, phenomena, ie to monitor the land. Practical significance. The result of the study was the creation of a digital map of the settlement and entry in the databases of the State Land and Urban Cadastre information about the boundaries and structure by developing appropriate urban and land management documentation.
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Gopikrishnan, T., and S. S. Ramakrishnan. "Projection analysis for cadastral mapping." Boletim de Ciências Geodésicas 19, no. 4 (December 2013): 729–45. http://dx.doi.org/10.1590/s1982-217020130004000013.
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Maps are created for different purposes. Among the various types of maps, cadastral maps are created by cadastral surveying. Cadastral maps are used for management of land and land-related activities by Government organisations or other institutions in various countries. Cadastral map making is both an art and a science, and the data about a surveyed land parcel are collected and incorporated in cadastral maps. Technological development has resulted in the development of simple methods for cadastral mapping. The Indian cadastral system for the state of Tamil Nadu is described in this paper. The challenges of conversion while scanning conventional paper-based land records to make digital records are explained. The procedure for selecting an appropriate projection system for scanned digital conventional records is elaborated on. A statistical application for identifying the nature of the data is shown. An inverse ranking system is used to identify a suitable projection system. Projection research is important in cadastral mapping when digitally processing a large number of land records in a country. The described method is effective for identification of a suitable projection system.
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Poornima, A., R. Jagadeeswaran, Balaji Kannan, and R. Sivasamy. "Generating cadastral base for Kolathupalayam village in Tamil Nadu from high resolution LISS IV sensor data." Journal of Applied and Natural Science 8, no. 4 (December 1, 2016): 2007–10. http://dx.doi.org/10.31018/jans.v8i4.1078.
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In the present study an attempt was made to generate cadastral base from high resolution satellite image (LISS IV) and to integrate with land use land cover information. The digital cadastral map with survey number for Kolathupalayam village in Erode district of Tamil Nadu was scanned, digitized and parcels were extracted. Similarly parcels or field boundaries were digitized and extracted from satellite image and were statistically compared by area. The area obtained from both the source through digitization correlated well with a pearson correlation of 0.87 and it was significant at 5 per cent. Thus, the area comparisons from both methods are significant indicating boundaries of individual fields generated from satellite image matched well with the one generated from cadastral map. The cadastral base generated from satellite image was overlaid on the classified image (level III output) to identify and generate land cover information against each survey number. Thus, the LISS IV data can be used for the identification and extraction of cadastral boundaries with good accuracy.
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Gagnon, Roy. "Cadastral plotting by similarity transformation." CISM journal 42, no. 2 (July 1988): 121–25. http://dx.doi.org/10.1139/geomat-1988-0011.
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Cadastral maps generated from digitizing tabloids have too many sources of error to be reliable when plotted at large scales. To improve the 1:1000 cadastral map, three numerical methods were tested during twenty-seven mapping projects. The systems studied were: complex number similarity transformation, simultaneous similarity transformation, and iterative similarity transformation. There were several “human interface” difficulties with the computer routines but all of the programs were found to be reliable, and cost effective. All of the resulting cadastral maps are in daily use. Numerical transformation was found superior to digital methods of cadastral compilation.
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Demidova, Polina, Olga Kolesnik, and Hasan Al Fatin. "3D Modelling in solution of cadastral and geodetic tasks." E3S Web of Conferences 164 (2020): 07014. http://dx.doi.org/10.1051/e3sconf/202016407014.
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The main purpose of this study is demonstrating possibilities of using 3D modelling in solving scientific and practical problems et the field of geodesy and cadastre. Increasing number of publications on this topic among Russian and foreign authors are shown. The article considers examples of creating three-dimensional models for the purposes of cadastre and geodesy. A 3D model of cadastral registration of a complex object (gas station) in the specialized software ArchiCad together with Google Earth is presented. The composition of each stage and data set of each “step” of cadastral works in relation to such objects in Russian Federation are proposed. The article considers shortcomings of legal regulation in relation to 3D cadastre at the present stage. In addition, three-dimensional models of the Dukan reservoir (Iraq), showing water levels at different times, were modelled. They based on digital data obtained from the digitized contour map. And it were used such software products like GlobalMapper, ArcMap and ArcScene. After analyzing the regulatory sources, conclusions about the lack of legal regulation in relation to the 3D cadastre in the Russian Federation were made.
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Hashim, N. M., A. H. Omar, K. M. Omar, M. A. Abbas, M. A. Mustafar, and S. A. Sulaiman. "CADASTRAL POSITIONING ACCURACY IMPROVEMENT (PAI): A CASE STUDY OF PRE-REQUISITE DATA QUALITY ASSURANCE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W16 (October 1, 2019): 255–60. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w16-255-2019.
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Abstract. Nowadays, there is an increasing need for comprehensive spatial data management especially digital cadastral database (DCDB). Previously, the cadastral database is in hard copy map, then converted into digital format and subsequently updated. Theoretically, these legacy datasets have relatively low positional accuracy caused by limitation of traditional measurement, adjustment technique and technology changes over time. With the growth of spatial based technology especially Geographical Information System (GIS) and Global Navigation Satellite System (GNSS) the Positional Accuracy Improvement (PAI) to the legacy cadastral database is inevitable. PAI is the refining process of the geometry feature in a geospatial dataset through integration between legacy and higher accuracy dataset to improve its actual position. However, by merely integrating both datasets will lead to a distortion of the relative geometry. Thus, an organized method is required to minimize inherent errors in fitting to the new accurate dataset. The focus of this study is to design a comprehensive data preparation for legacy cadastral datasets improvement. The elements of datum traceability, cadastral error propagation and weightage setting in adjustment will be focused to achieve the targeted objective. The proposed result can be applied as a foundation for PAI approach in cadastral database modernization.
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Zakir Najafova, Narmin. "PROCEDURE OF TENDENCY MAP ON THE BASIS OF GEOGRAPHICAL INFORMATION SYSTEM OF JALILABAD CADASTRY DISTRICT." SCIENTIFIC WORK 66, no. 05 (May 20, 2021): 77–80. http://dx.doi.org/10.36719/2663-4619/66/77-80.
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As the inclination increases, soil erosion and, in general, the process of erosion on the slopes intensifies, the moisture content of the soil and soil-forming rocks decreases, the growth of agricultural crops and pastures weakens, and productivity decreases. Taking all this into account, we have developed a slope map with degrees based on the digital elevation model of the Jalilabad cadastral region (DEM file). Slope study and mapping is one of the key measures to protect soils from erosion as well as to combat erosion. When the slope reaches 3-4°, the washing of the soil is even faster. It is not recommended to plow the fields when the slope is 8-10° and more. From this point of view, as a result of our research, the inclination of the Jalilabad cadastral region has been studied. The lowest inclination range in the study area is 0-20. Low inclination is observed mainly in the plains of Jalilabad cadastral region. As you ascend to the heights, there is an increase in inclination. Taking into account the propensity in agriculture can lead to high yields. Key words: Inclination, Slope, Erosion, Geographic Information System (GIS), ESRI, ArcGis
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Moon, Jung-kyun, Seon-bong Yoo, Hong-gyoo Sohn, and Yonng-sun Cho. "Conflicting Maps: How Legal Perspectives Could Minimize Zoning Cancellation in Republic of Korea." Land 10, no. 3 (March 3, 2021): 256. http://dx.doi.org/10.3390/land10030256.
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The purpose of this paper is to propose legal and policy enhancements that may prevent the cancellation of the legal force of zoning due to discord with the Korean Land Use Regulation Map (LURM) and secure legal stability. The legal force of zoning has been canceled because of the discordance of the LURM with past cadastral maps, and this has led to confusion regarding zoning decisions and even the postponement and cancellation of public projects. Here, the causes of LURM discordance and legal cancellation of zoning were identified and evaluated through judicial precedents. We found that improper use of data and adoption of tolerance caused the cancellations. To remedy these problems, we suggest the disclosure and application of cadastral computerized data instead of serial cadastral maps during LURM production activities to justify the legal adoption of allowable errors. We also recommend the widespread introduction of legal fiction for the rapid production of digital cadastral maps. Zoning cancellation could be minimized through such enhancements, and the map could allow people to visualize elements more conveniently. Moreover, this study aims to expand relevant legal mapping.
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Mothi Kumar, K. E., S. Singh, P. Attri, R. Kumar, A. Kumar, Sarika, R. S. Hooda, et al. "GIS based Cadastral level Forest Information System using World View-II data in Bir Hisar (Haryana)." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-8 (November 28, 2014): 605–12. http://dx.doi.org/10.5194/isprsarchives-xl-8-605-2014.
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Identification and demarcation of Forest lands on the ground remains a major challenge in Forest administration and management. Cadastral forest mapping deals with forestlands boundary delineation and their associated characterization (forest/non forest). The present study is an application of high resolution World View-II data for digitization of Protected Forest boundary at cadastral level with integration of Records of Right (ROR) data. Cadastral vector data was generated by digitization of spatial data using scanned mussavies in <i>ArcGIS</i> environment. Ortho-images were created from World View-II digital stereo data with Universal Transverse Mercator coordinate system with WGS 84 datum. <br><br> Cadastral vector data of Bir Hisar (Hisar district, Haryana) and adjacent villages was spatially adjusted over ortho-image using <i>ArcGIS</i> software. Edge matching of village boundaries was done with respect to khasra boundaries of individual village. The notified forest grids were identified on ortho-image and grid vector data was extracted from georeferenced cadastral data. Cadastral forest boundary vectors were digitized from ortho-images. Accuracy of cadastral data was checked by comparison of randomly selected geo-coordinates points, tie lines and boundary measurements of randomly selected parcels generated from image data set with that of actual field measurements. <br><br> Area comparison was done between cadastral map area, the image map area and RoR area. The area covered under Protected Forest was compared with ROR data and within an accuracy of less than 1 % from ROR area was accepted. The methodology presented in this paper is useful to update the cadastral forest maps. The produced GIS databases and large-scale Forest Maps may serve as a data foundation towards a land register of forests. The study introduces the use of very high resolution satellite data to develop a method for cadastral surveying through on - screen digitization in a less time as compared to the old fashioned cadastral parcel boundaries surveying method.
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Čeh, Gielsdorf, Trobec, Krivic, and Lisec. "Improving the Positional Accuracy of Traditional Cadastral Index Maps with Membrane Adjustment in Slovenia." ISPRS International Journal of Geo-Information 8, no. 8 (July 30, 2019): 338. http://dx.doi.org/10.3390/ijgi8080338.
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The main purpose of this research is to evaluate the improvement in positional accuracy (PAI) of cadastral boundary points’ coordinates through the adjustment of a large set of digital cadastral index maps of rural regions based on traditional Franciscan-origin maps of heterogeneous geometric quality. The distribution of residuals of local coordinates of reference points onto the as yet unconnected neighboring points is researched. In this article, we use the adjustment method based on neighborhood transformation with a mechanical membrane model deriving from Hooke’s Law and consider a general case study of a Slovenian traditional cadastral graphic database of various historical origins. The number of geometric errors in fieldbook information from outdated measurement technologies and inappropriate implementations of cadastral index map geometric maintenance reduces the number of complying datasets of relative geometry by 50%. Previous experiments in traditional cadastral index maps of rural regions, with triangle-based piecewise affine plane transformation (RMSE = 2.4 m), have been improved by the membrane method (RMSE = 1.0 m), based on tests at 623 control points. Positional accuracy improvement of cadastral geospatial data and the integration of geometric subsystems provided recognizable benefits for the future maintenance of a unique, integrated, centralized graphical cadastral subsystem, which is in the testing phase in Slovenia.
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Vermeer, Martin, Zinabu Getahun, Tulu Besha Bedada, and Berhan Gessesse. "Positional accuracy validation of digital orthophoto mapping: case Bahir Dar." Nordic Journal of Surveying and Real Estate Research 13, no. 1 (April 9, 2018): 7–17. http://dx.doi.org/10.30672/njsr.65724.
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This study used in-situ Global Positioning System (GPS) measurements to assess the accuracy of horizontal coordinates of the orthophoto
map for Bahir Dar city. The GPS data was least-squares adjusted using the GAMIT/GLOBK and Leica GeoOffice (LGO) software packages. Local and
regional GPS reference stations, including the continuously operating reference station of Bahir Dar University’s Institute of Land Administration, were
included in the adjustment. Thus, horizontal coordinates at five checkpoints were obtained, which were used to assess the horizontal positional accuracy
of these same points in the orthophoto map.
Point accuracies found for point locations read from the orthophoto map were inferred to be on the level ±0.15 m. This meets well the requirement
of the Ethiopian Mapping Authority of ±0.30 m for maps on scale 1 : 2000, which are sufficient for cadastral and land-use planning use everywhere,
also in urban areas, though not perhaps in dense city centres.
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Abdul Halim, N. Z., S. A. Sulaiman, K. Talib, and Z. A. Majeed. "INVESTIGATING THE NATIONAL DIGITAL CADASTRAL DATABASE (NDCDB) DATA HANDLING WITHIN GIS APPLICATIONS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W9 (October 26, 2018): 3–10. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w9-3-2018.
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<p><strong>Abstract.</strong> This paper explains the investigation carried out to understand NDCDB data handling within GIS applications. The method used was a case study replicated to five established GIS applications from different agencies, namely eKadasOnline, SKiP, iPlan, TM SmartMap and DBKL Interactive Portal. The case study was propositioned to the statements of; i) “<i>Such methods of applying NDCDB are because user understands its characteristics</i>”, and ii) “<i>such methods of applying NDCDB are because users know how to adopt it.</i>” Cross-case comparison analysis was then conducted to identify rival findings and explanation building. Based on the evidence of the multi-case study, it was concluded that such methods of adopting NDCDB by the GIS applications administrators and developers were because most of them have a partial understanding of the NDCDB characteristics which led to NDCDB being adopted based on the method that they think were suitable. Recommendations are highlighted in this paper to rectify knowledge-based mistakes found in this study, that included; i) ensuring the NDCDB’s cut-off-date; ii) utilises all existing NDCDB layers; iii) ensure to use the map projection parameters are the authorised and official value; iv) understand that the NDCDB utilises the GDM2000 datum with ITRF2000 epoch 2006; v) False Easting and North Easting can be discarded for geocentric datum; vi) adopting the built-in Geocentric Cassini map projection of GIS software is not advisable; and vii) obtaining relevant additional NDCDB layers. With the recommendations emplace, it is hoped the full potential of NDCDB can be tapped especially for multipurpose cadastre implementation including to ease spatial analysis. Data replication, exhaustion of resources, and reduce risks or costly investments made by decision makers, policy makers, developers or individuals can be avoided when NDCDB is fully optimised for spatial analysis.</p>
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Li, Q., Y. Shi, S. Auer, R. Roschlaub, K. Möst, M. Schmitt, and X. X. Zhu. "DETECTION OF UNDOCUMENTED BUILDINGS USING CONVOLUTIONAL NEURAL NETWORK AND OFFICIAL GEODATA." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences V-2-2020 (August 3, 2020): 517–24. http://dx.doi.org/10.5194/isprs-annals-v-2-2020-517-2020.
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Abstract. Undocumented buildings are buildings which were built years ago, but were never recorded in official digital cadastral maps. Detection of undocumented buildings is of great importance for urban planning and monitoring. The state of Bavaria, Germany, pursues this task based on high resolution optical data and digital surface models, using semi-automatic detection methods, which suffer from a high false alarm rate. In order to study the influence of sampling strategies on the performance of building detection, we have firstly designed a transferability analysis experiment, which has not been adequately addressed in the current literature. In this experiment, we test whether the trained model from a district contains valuable information for building detection in a different district. It was found that the large-scale building detection results can be considerably improved when training samples are collected from different districts. Based on the building detection results, we propose a novel framework for the detection of undocumented buildings using Convolutional Neural Network (CNN) and official geodata. More specifically, buildings are identified as undocumented, when their pixels in the output of the CNN are predicted as “building”, whereas they belong to the “non-building” in the Digital Cadastral Map (DFK). The detected undocumented building pixels are subsequently divided into the class of old or new undocumented building with the aid of a Temporal Digital Surface Model (tDSM) in the stage of decision fusion. By doing so, a seamless map of undocumented buildings is generated for 1/4th of the state of Bavaria, Germany at a spatial resolution of 0.4 m, which has demonstrated the use of CNN for the robust detection of undocumented buildings at large-scale.
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Podryadchikova, Ekaterina D., Larisa N. Gilyova, and Alexey V. Dubrovsky. "THE CALCULATION OF THE RANGES OF THE SPECIFIC RATE OF CADASTRAL COST TO BUILD 3D MAPS OF ESTIMATED ZONING (ON THE EXAMPLE OF TYUMEN CITY)." Vestnik SSUGT (Siberian State University of Geosystems and Technologies) 26, no. 3 (2021): 147–61. http://dx.doi.org/10.33764/2411-1759-2021-26-3-147-161.
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The article proposes a method of constructing an interval variation series with equal intervals as a mathematical tool for calculating the step of changes in the UPCS for the maps of estimated zoning. It describes the sequence of calculations, which includes 3 stages: the formation of the interval variation series, the calculation of the distribution center indicators, and the calculation of the relative variation indicators of the interval variation series. The resulting interval variation series allowed us to group the totality of the state cadastral assessment data and present them in the form of homogeneous intervals necessary for performing the estimated zoning. To visualize the results, it is proposed to use a three-dimensional geoinformation model in the form of a 3D prism map, which allows you to visually dis-play changes in the value of the UPC. The presented methodology was tested during the evaluation zoning of the territory of the city of Tyumen using the results of the state cadastral assessment. The created assessment zoning map can be used for cadastral valuation of newly formed real estate ob-jects, for information support of the territorial planning system, as well as for analytical support of in-vestment programs and projects for the development of land and property complexes. Assessment zoning maps made with the use of modern geoinformation technologies in the form of three-dimensional digital models can be one of the elements of an intelligent model of an urban area, which will allow not only to carry out operational management, but also to develop effective mechanisms that optimize the trajectory of spatial development of a locality.
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Holland, D. A., I. Hurst, G. Heathcote, J. Horgan, and D. Capstick. "THE CHANGING NATURE OF GEOSPATIAL DATA – CHALLENGES FOR A NATIONAL MAPPING AGENCY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B5-2020 (August 24, 2020): 179–83. http://dx.doi.org/10.5194/isprs-archives-xliii-b5-2020-179-2020.
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Abstract. National Mapping and Cadastral Agencies have been creating geospatial products for customers for many decades and, in some cases, for over two centuries. During that time the nature of the products largely remained the same, consisting of cartographic representations of the world, usually generalized and projected in a two-dimensional form. Even when mapping agencies began to convert their mapping from paper to digital form, the products created were largely based on their paper map counterparts. In recent times, the general public has become far more aware of geospatial data due to global initiatives from Google, Bing, Apple, OpenStreetMap and others. While some users of geospatial data still require the same products as before, many other users need different kinds of geospatial data and products, ones which will provide new challenges to National Mapping and Cadastral Agencies. In this paper we discuss some of these new geospatial data users and illustrate some the challenges using an example from Ordnance Survey’s recent experience of a project in the connected autonomous vehicle domain.
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Tóth, Tibor, T. Németh, T. Fábián, T. Hermann, E. Horváth, Z. Patocskai, F. Speiser, Sz Vinogradov, and G. Tóth. "Internet-based Land Valuation System Powered by a GIS of 1:10,000 Soil Maps." Agrokémia és Talajtan 55, no. 1 (March 1, 2006): 109–16. http://dx.doi.org/10.1556/agrokem.55.2006.1.12.
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An internet-based land valuation system is being developed to replace the scientifically obsolete Hungarian land valuation system, the so-called AK (“Gold Crown”) ratings. The new system is supported by a GIS and it is unique in its capability of providing an up-to-date index of soil quality and land value. The geographical information is provided by national map databases on genetic soil maps and soil attributes at the scale of 1:10.000, combined with cadastral maps, digital terrain model, topographic map, orthophotos of aerial photographs and agronomic field records. The automated algorithms are easy to update, can be made legally binding and can provide a transparent system for land taxation, calculation of subsidies, appropriation. Given that detailed (1:10,000 or finer) soil map coverage will be completed for all lands of Hungary (at date only 60% of the croplands have soil maps), this way a multifunctional system will be available that promotes an optimum use of land resources.
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Rakhmonov, Kosimdjon, and Mokhigul Abdurakhimova. "Improvement of cadastral information provisioning system in an administrative region." E3S Web of Conferences 227 (2021): 05002. http://dx.doi.org/10.1051/e3sconf/202122705002.
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Improvement of the land cadastre information system in the administrative district will make more efficient use of the land fund. More than 42,000 land users in Kibray, which is the object of the research, can quickly manage land resources through the creation of land information systems. As a result, the use of specialized software at the district level increases the quality of the specialists’ work compared to traditional methods, and time consuming 3 and 5 times the amount of data transmission to consumers. The collected and regulated data will serve as the main source of the unified system of land registration in Kibray district and the creation of a special land fund and its rational distribution among land users. The method developed to compile a digital cadastre map based on an example of an administrative district is the basis for the registration of land parcel and, in turn, the land fund distribution. Information on the state of land resources is mainly collected in the State Land Cadastre. Registration of the rights to the land parcel, the main component of which is the re-registration of new land users and the existing ones, requires the most up-to-date information on the land cadastre.
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Sladić, Goran, Branko Milosavljević, Siniša Nikolić, Dubravka Sladić, and Aleksandra Radulović. "A Blockchain Solution for Securing Real Property Transactions: A Case Study for Serbia." ISPRS International Journal of Geo-Information 10, no. 1 (January 15, 2021): 35. http://dx.doi.org/10.3390/ijgi10010035.
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The origins of digital money and blockchain technology goes back to the 1980s, but in the last decade, the blockchain technology gained large popularity in the financial sector with the appearance of cryptocurrencies such as Bitcoin. However, recently, many other fields of application have been recognized, particularly with the development of smart contracts. Among them is the possible application of blockchain technology in the domain of land administration, mostly as a tool for transparency in the developing countries and means to fight corruption. However, developed countries also find interest in launching pilot projects to test their applicability in land administration domain for reasons such as to increase the speed and reduce costs of the real property transactions through a more secure environment. In this paper, we analyse how transactions are handled in Serbian land administration and how this process may be supported by modern ledger technologies such as blockchain. In order to analyse how blockchain could be implemented to support transactions in land information systems (LIS), it is necessary to understand cadastral processes and transactions in LIS, as well as legislative and organizational aspects of LIS. Transactions in cadastre comprise many actors and utilize both alphanumeric (descriptive or legal) data and geospatial data about property boundaries on the cadastral map. Based on the determined requirements for the blockchain-based LIS, we propose a system architecture for its implementation. Such a system keeps track of transactions in LIS in an immutable and tamper-proof manner to increase the security of the system and consequently increase the speed of transactions, efficiency, and data integrity without a significant impact on the existing laws and regulations. The system is anticipated as a permissioned public blockchain implemented on top of the Ethereum network.
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Trinder, John C. "THE CURRENT STATUS OF MAPPING IN THE WORLD – SPOTLIGHT ON OCEANIA." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B4 (June 13, 2016): 95–102. http://dx.doi.org/10.5194/isprsarchives-xli-b4-95-2016.
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A summary is presented of the results of questionnaires sent to mapping agencies in Oceania, covering Australia, New Zealand and the Pacific Island countries, to investigate the status of mapping in those countries. After World War II, the Australian Federal Government funded the initial small scale mapping of the whole country leading to increased percentages of map coverage of Australia. Mapping at larger scales is undertaken by the states and territories in Australia, including cadastral mapping. In New Zealand mapping is maintained by Land Information New Zealand (LINZ) at 1:50,000 scale and smaller with regular updating. The results of the questionnaires also demonstrate the extent of map coverage in six Pacific Islands, but there is little information available on the actual percent coverage. Overall there are estimated to be an increases in the percentages of coverage of most map scales in Oceania. However, there appear to be insufficient professionals in most Pacific Island countries to maintain the mapping programs. Given that many Pacific Island countries will be impacted by rising sea level in the future, better mapping of these countries is essential. The availability of modern technology especially satellite images, digital aerial photography and airborne lidar data should enable the Pacific Island countries to provide better map products in future, but this would depend on foreign aid on many occasions.
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Trinder, John C. "THE CURRENT STATUS OF MAPPING IN THE WORLD – SPOTLIGHT ON OCEANIA." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B4 (June 13, 2016): 95–102. http://dx.doi.org/10.5194/isprs-archives-xli-b4-95-2016.
Full textAbstract:
A summary is presented of the results of questionnaires sent to mapping agencies in Oceania, covering Australia, New Zealand and the Pacific Island countries, to investigate the status of mapping in those countries. After World War II, the Australian Federal Government funded the initial small scale mapping of the whole country leading to increased percentages of map coverage of Australia. Mapping at larger scales is undertaken by the states and territories in Australia, including cadastral mapping. In New Zealand mapping is maintained by Land Information New Zealand (LINZ) at 1:50,000 scale and smaller with regular updating. The results of the questionnaires also demonstrate the extent of map coverage in six Pacific Islands, but there is little information available on the actual percent coverage. Overall there are estimated to be an increases in the percentages of coverage of most map scales in Oceania. However, there appear to be insufficient professionals in most Pacific Island countries to maintain the mapping programs. Given that many Pacific Island countries will be impacted by rising sea level in the future, better mapping of these countries is essential. The availability of modern technology especially satellite images, digital aerial photography and airborne lidar data should enable the Pacific Island countries to provide better map products in future, but this would depend on foreign aid on many occasions.
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Varfolomeev, A. F., E. A. Kovalenko, V. F. Manukhov, and L. G. Kalashnikova. "Special features of aerial survey technology using unmanned aircraft." Geodesy and Cartography 962, no. 8 (September 20, 2020): 58–64. http://dx.doi.org/10.22389/0016-7126-2020-962-8-58-64.
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In recent years, there have been qualitative changes in surveying associated with the use of robotic systems, such as unmanned aerial vehicles. Currently, traditional geodetic and topographic technologies are giving way to high-precision and high-performance systems using robotics. The technology of aerial photography from drones for mapping territories, operational monitoring linear structures, construction sites, as well as for engineering and underground surveys, solving cadastral matters, building realistic three-dimensional terrain models, etc., is gaining more and more popularity in the world. The transition to new technologies entails restructuring not only the methods of determining coordinates, but also the stages of pre-design and design work. The authors describes the capabilities of geographic information systems for automating some stages of field geodetic data cameral processing obtained through using unmanned aircraft. As a result of the study, it was discovered that the marks of the earth’s surface, read from the constructed digital map, are in good agreement with those obtained as a result of the ground-based geodetic survey.
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Yan, J., S. W. Jaw, K. H. Soon, and G. Schrotter. "THE LADM-BASED 3D UNDERGROUND UTILITY MAPPING: CASE STUDY IN SINGAPORE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W15 (September 23, 2019): 117–22. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w15-117-2019.
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<p><strong>Abstract.</strong> A digital twin can be defined as a realistic representation of something physical. To improve decision making, a reliable digital twin of the underground is required. Utilities represent a significant portion of physical assets existing underground. Most of these utilities are situated in the relatively shallow layers of the underground, up to a few meters below the surface. The reliable information on subsurface utilities has clear benefits all throughout the life cycle of state land, resulting in efficient decision-making processes, cost savings, and additional revenues for land administration professionals. However, the lack of a reliable map of subsurface utilities lead to ill-informed decisions, costly information gathering, and missed business potential. This paper will share a case study of the 3D underground utility mapping workflow from data capture to usage in Singapore. The new data is collected by the Pegasus: Stream, a mobile mapping platform which captures above and underground data using the photo, laser and ground penetrating radar technology. Based on the Land Administration Domain Model (LADM) 3D underground utility data model, the new collected data is used with the existing utility and cadastral data for land administration. This study case expects to explore the reasonable workflow of 3D underground utility mapping to provide reliable information for land administration.</p>
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Li, Qingyu, Yilei Shi, Stefan Auer, Robert Roschlaub, Karin Möst, Michael Schmitt, Clemens Glock, and Xiaoxiang Zhu. "Detection of Undocumented Building Constructions from Official Geodata Using a Convolutional Neural Network." Remote Sensing 12, no. 21 (October 28, 2020): 3537. http://dx.doi.org/10.3390/rs12213537.
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Undocumented building constructions are buildings or stories that were built years ago, but are missing in the official digital cadastral maps (DFK). The detection of undocumented building constructions is essential to urban planning and monitoring. The state of Bavaria, Germany, uses two semi-automatic detection methods for this task that suffer from a high false alarm rate. To solve this problem, we propose a novel framework to detect undocumented building constructions using a Convolutional Neural Network (CNN) and official geodata, including high resolution optical data and the Normalized Digital Surface Model (nDSM). More specifically, an undocumented building pixel is labeled as “building” by the CNN but does not overlap with a building polygon of the DFK. The class of old or new undocumented building can be further separated when a Temporal Digital Surface Model (tDSM) is introduced in the stage of decision fusion. In a further step, undocumented story construction is detected as the pixels that are “building” in both DFK and predicted results from CNN, but shows a height deviation from the tDSM. By doing so, we have produced a seamless map of undocumented building constructions for one-quarter of the state of Bavaria, Germany at a spatial resolution of 0.4 m, which has proved that our framework is robust to detect undocumented building constructions at large-scale. Considering that the official geodata exploited in this research is advantageous because of its high quality and large coverage, a transferability analysis experiment is also designed in our research to investigate the sampling strategies for building detection at large-scale. Our results indicate that building detection results in unseen areas at large-scale can be improved when training samples are collected from different districts. In an area where training samples are available, local training sampless collection and training can save much time and effort.
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Bouzahar, Faiza hassainia, Lahbaci Ouerdachi, Mahdi Keblouti, and Akram Seddiki. "The contribution of remote sensing in hydraulics and hydrology, analysis and evaluation of digital terrain model for flood risk mapping." Journal of Water and Land Development 39, no. 1 (December 1, 2018): 17–26. http://dx.doi.org/10.2478/jwld-2018-0055.
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AbstractThe study of flood risk involves the knowledge of the spatial variability in the characteristics of the vegetation cover, terrain, climate and changes induced by the intervention of humans in watersheds. The increased needs of the actors in land management mean that static maps no longer meet the requirements of scientists and decision-makers. Access is needed to the data, methods and tools to produce complex maps in response to the different stages of risk evaluation and response. The availability of very high spatial resolution remote sensing data (VHSR) and digital terrain model (DTM) make it possible to detect objects close to human size and, therefore, is of interest for studying anthropogenic activities. The development of new methods and knowledge using detailed spatial data, coupled with the use of GIS, naturally becomes beneficial to the risks analysis. Indeed, the extraction of information from specific processes, such as vegetation indices, can be used as variables such as water heights, flow velocities, flow rates and submersion to predict the potential consequences of a flood. The functionalities of GIS for cartographic overlay and multi-criteria spatial analysis make it possible to identify the flood zones according to the level of risk from the flood, thus making it a useful decision-making tool.This study was carried out on the territory of watersheds in the Annaba region, East of Algeria. The choice was guided by the availability of data (satellites images, maps, hydrology, etc.) and hydrological specificities (proximity to an urban area). The adopted model is divided into two parts. The first part is to establish a methodology for the preservation of wetland biodiversity and the protection of urban areas against floods. Thanks to the multi-criteria spatial analysis and the functionalities of the GIS, we established a flood risk map for the watershed defined above. The result was satisfactory compared with the field reality. The second part of the model consisted of the integration of cadastral information with the flood risk map obtained in the first part of our research.The primary objective of this mapping is to contribute to the development of flood risk management plans (in the sense of risk reduction). The mapping stage also provides quantitative elements to more accurately assess the vulnerability of a territory.
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Tomás, Pagán, Navarro, Cano, Pastor, Riquelme, Cuevas-González, et al. "Semi-Automatic Identification and Pre-Screening of Geological–Geotechnical Deformational Processes Using Persistent Scatterer Interferometry Datasets." Remote Sensing 11, no. 14 (July 14, 2019): 1675. http://dx.doi.org/10.3390/rs11141675.
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This work describes a new procedure aimed to semi-automatically identify clusters of active persistent scatterers and preliminarily associate them with different potential types of deformational processes over wide areas. This procedure consists of three main modules: (i) ADAfinder, aimed at the detection of Active Deformation Areas (ADA) using Persistent Scatterer Interferometry (PSI) data; (ii) LOS2HV, focused on the decomposition of Line Of Sight (LOS) displacements from ascending and descending PSI datasets into vertical and east-west components; iii) ADAclassifier, that semi-automatically categorizes each ADA into potential deformational processes using the outputs derived from (i) and (ii), as well as ancillary external information. The proposed procedure enables infrastructures management authorities to identify, classify, monitor and categorize the most critical deformations measured by PSI techniques in order to provide the capacity for implementing prevention and mitigation actions over wide areas against geological threats. Zeri, Campiglia Marittima–Suvereto and Abbadia San Salvatore (Tuscany, central Italy) are used as case studies for illustrating the developed methodology. Three PSI datasets derived from the Sentinel-1 constellation have been used, jointly with the geological map of Italy (scale 1:50,000), the updated Italian landslide and land subsidence maps (scale 1:25,000), a 25 m grid Digital Elevation Model, and a cadastral vector map (scale 1:5,000). The application to these cases of the proposed workflow demonstrates its capability to quickly process wide areas in very short times and a high compatibility with Geographical Information System (GIS) environments for data visualization and representation. The derived products are of key interest for infrastructures and land management as well as decision-making at a regional scale.
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Yan, J., S. W. Jaw, R. V. Son, K. H. Soon, and G. Schrotter. "THREE-DIMENSIONAL DATA MODELLING FOR UNDERGROUND UTILITY NETWORK MAPPING." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4 (September 19, 2018): 711–15. http://dx.doi.org/10.5194/isprs-archives-xlii-4-711-2018.
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<p><strong>Abstract.</strong> Cities around the world face an increasing need for land as density in urban areas increases rapidly. The pressure to expand a city’s space is especially acute for a city-state like Singapore. How to make better use of underground space? This issue becomes much more emergent in the urban development. In the big data era, a data-driven approach of underground spaces is necessary for the sustainable development of a city along with rapid urbanization. A reliable three dimensional (3D) digital map of utility networks is crucial for urban planners to understand one of the most impactful aspects of the underground space planning. The mapping underground utility networks is a challenging task, especially for cities with limited land resources, congested underground spaces, and a lack of uniform existing practices. This paper proposes a framework to organise the workflow from an underground utility data survey to data use. This framework includes two core parts: A 3D utility network data model that aims to convert utility survey data to 3D geospatial information, and a 3D utility cadastral data model that supports utility ownership management. It is expected that reliable and accurate information on underground utility networks can lead to a better understanding and management of underground space, which eventually contributes to better city planning, making the unseen structures visible.</p>
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Kocur-Bera, Katarzyna, and Agnieszka Dawidowicz. "Land Use versus Land Cover: Geo-Analysis of National Roads and Synchronisation Algorithms." Remote Sensing 11, no. 24 (December 17, 2019): 3053. http://dx.doi.org/10.3390/rs11243053.
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Technological progress in Earth surface observation provides a vast range of information on the land and methods of its use. This enables property owners, users and administrators to monitor the state of the boundaries of the land they own/administer. The land cover, monitored directly on the ground, is not always consistent with the land use entered in the Land and Property Registry (LPR). Discrepancies between these data are often found in former communist countries. One of the reasons for this was the rapid process of land privatisation, which took place in Poland, without updating information on the plot geodetic boundaries. The study examined and compared the land use (entered in the LPR) with the land cover (on the ground) for national roads (acr. LU-LC). The most frequent discrepancies were selected, using CLC2018, digital orthophotomaps (using the Web Map Service (WMS) browsing service compliant with Open Geospatial Consortium (OGC) standards), cadastral data, statistical modelling and an updated survey of the right-of-way. Subsequently, six algorithms were proposed to synchronise the land use and land cover when the right-of-way was used by unauthorised persons, and two algorithms for cases of unauthorised use of land by the road administrator. Currently, it is difficult to synchronise the land cover with the land use from the administrative, legal and social points of view. The results of analyses show that full synchronisation of land use and land cover is complicated and time-consuming, although desired.
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Krejci, Jiri, and Jiri Cajthaml. "Transformation of the Vltava Historical Riverine Landscape within the Modern Times." Abstracts of the ICA 1 (July 15, 2019): 1–2. http://dx.doi.org/10.5194/ica-abs-1-189-2019.
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<p><strong>Abstract.</strong> The Vltava River and its surroundings had many different faces and functions in the past centuries. The Vltava is the longest river running through the heart of Bohemia, probably the most famous and popular river in the Czech Republic, one of the national symbols, important trade and transport route in the past, river with beautiful landscape favourite by poets, travellers, and tourists, place where the biggest dam reservoir system in the Czech Republic was built, popular recreational area in the present and many more. Therefore, many different documents are dealing with the Vltava River and its riverine landscape.</p><p> The main objective of the project supported by the Ministry of Culture of the Czech Republic is to create comprehensive information system about the Vltava River aggregating and incorporating various historical and modern documents and data. This system will allow maintaining and documenting a wealth of information about the history of the Vltava River, including immovable and movable cultural heritage using new technologies. The project is focused on the upper three quarters of the Vltava River from its springs to confluence with the Berounka River close to Prague in the period from mid 18th century up to the present day. Riverine landscape along the Vltava underwent an intensive transformation in many aspects. Firstly, the cultural landscape with mostly minor settlement combined with appreciated but even feared wild natural narrow valleys has changed intensively along with a construction of the dam cascade especially in the middle part of the river in the second half of the 20th century. Small but widespread settlements, transport function of the river and wild nature were replaced by dams producing electric energy and retaining extensive water reservoirs providing water supply and protection from frequent inundations and last but not least being very popular for recreation. Unfortunately, many houses, water mills, chapels, churches, picturesque natural places, etc. have been flooded. The former face of the Vltava riverine landscape is preserved only in various archival documents and their online presentation is the main project goal.</p><p> There are large volumes of miscellaneous historical and modern data sources dealing with the Vltava river which are being used in the project. Extensive research of various public and institutional archives is currently still being carried out. Some resources such as old photographs and postcards are found also in private collections. First of all, there are various works from old cadastral maps, old river maps with cross sections, longitudinal profiles of the river, old site plans and interesting building plans, State Derived Map and aerial photographs from 1950s, site and constructional plans of dams to the up to date cadastral map, orthophotos and DTM. The Imperial Imprints of the Stable Cadastre (scale 1&thinsp;:&thinsp;2&thinsp;880) from the years 1826–1843 rank among the most valuable and very useful. Due to their geometric precision and visual attractiveness, these maps are suitable for vectorization, and form an excellent base layer for the web mapping application and 3D visualization. Another very important map is the State Derived Map (scale 1&thinsp;:&thinsp;5&thinsp;000; its first issue) from the early 1950s containing planimetry as well as altimetry. It shows situation of area just before the dam reservoirs cascade construction was started hence it allows reconstruction of former Vltava valley. Maps and plans are complemented by old photographs, postcards, iconography and also text sources.</p><p> All data sources described above have to be carefully processed before their incorporation into the information system and subsequent 2D- or 3D- applications could be designed. Speaking in particular about maps and plans, they have to be digitised, georeferenced and selected map content is vectorised. The majority of data sources are obtained in the analogue paper form, thereby a high resolution scanning has to be done to acquire digital copies of requested maps and plans. Then the scanned data is georeferenced employing suitable global or local transformations depending on the type of map. Carefully selected map content is vectorised and the database of significant features (buildings or objects of cultural, social, production and water management importance) with important attributes is being filled up. Every feature has its location, at least approximately if precise position is unknown. Also the old photographs and postcards are geolocated to be incorporated into the information system.</p><p> 2D web mapping application (Figure 1) has been created based on processed data and it is being updated. It presents and compares various layers (georeferenced maps and plans, vectorised data model, objects of interest, etc.). The application allows overlaying of various raster and vector layers from different times using the swipe tool. Objects of interest and photographs are represented by points, where each point leads to a popup with more information.</p><p> Online 3D visualisation is effective and popular way of geographical data presentation thus besides the 2D also 3D application may bring a new perspective to former Vltava landscape. The Vltava River valley, often narrow and deep, is perfect for the 3D presentation, especially if it is completed by other objects or phenomena (e.g. extinct settlements, important buildings, historical or potential floods). Precise 3D modelling of important structures in CAD software is a common but time-consuming process. Therefore, it is not possible to model the whole extinct settlements in 3D and thus procedural modelling is applied instead. It allows to visualise a simplified reconstructive model of flooded villages in the entire area of interest even in various periods of time.</p><p> The mission of the project is, in particular, to document information on the changes of the Vltava riverine landscape within the last three centuries in the context of various events, as well as to make it subsequently available to the general public. Thus, it might act as a transfer of historical science into education through modern cartographic methods. The project itself is actually in its first phase and the activities proceed continuously.</p>
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Mikoláš, Milan, Jiří Žváček, Michal Vaněk, Roman Donocik, Petra Zápalková, and Václav Sotorník. "TESTING THE EFFECT OF UNDERMINING ON POSITIONAL ACCURACY OF THE DIGITAL TECHNICAL MAP OF OSTRAVA IN THE PŘÍVOZ CADASTRAL DISTRICT / PŘÍVOZ KADASTRINIO RAJONO ĮTAKOS OSTRAVOS SKAITMENINIO TECHNINIO ŽEMĖLAPIO POZICINIAM TIKSLUMUI PADARINIŲ TYRIMAS / АНАЛИЗ ВЛИЯНИЯ РАЗРУШАЮЩИХ СИЛ НА ПОЗИЦИОННУЮ ТОЧНОСТЬ ЦИФРОВОЙ ТЕХНИЧЕСКОЙ КАРТЫ Г. ОСТРАВА В КАДАСТРОВОМ РАЙОНЕ ПРИВОЗ." Geodesy and Cartography 37, no. 3 (November 1, 2011): 111–18. http://dx.doi.org/10.3846/13921541.2011.626251.
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Intensive underground exploitation took place in the area of the Ostrava corporate town in recent past. After the coal mining was shut down in 1994 gradual subsidence in the town area has slowed down, however, establishing of the Digital Technical Map of Ostrava (DTMMO) dates back to 1992. When working a seam the original geostatic and tectonic stress state in the surrounding rock mass changes, which is accompanied by rock transformation and displacement from the roof towards the stope. Undermining is manifested in landscape morphology in many different ways that we can divide to continuous and discontinuous deformations. Residual mining effects could therefore have impacted positional accuracy of DTMMO in the last 18 years. The Bohumín 8-9/43 topographic sheet was selected for testing purposes in the Přívoz cadastral district. Santrauka Netolimoje praeityje Ostravos, miesto Čekijos rytuose, savivaldybėje buvo intensyviai eksploatuojama žemė. Nustojus užsiiminėti angliakasyba, nuo 1994-ųjų, palaipsnis žemės smukimas miesto vietovėse sulėtėjo. Skaitmeninis techninis Ostravos žemėlapis (DTMMO) sukurtas dar 1992 metais. Vykstant darbams žemės tarpsluoksnyje pirminis geostatinis ir tektoninis slėgis aplinkinėje uolienų masėje keitėsi, ir tai lėmė uolienų transformaciją ir slinktį. Kraštovaizdžio morfologijoje žala pasireiškia įvairiais būdais. Skiriama nenutrūkstamoji ir nutrūkstamoji deformacijos. Liekamasis kasybos poveikis per pstaruosius 18 metų galėjo paveikti pozicinį DTMMO tikslumą. Tiriant Přívoz kadastrinį rajoną, pasirinkta Bohumín 8-9/43 topografinio žemėlapio lapas. Резюме В недавнем прошлом в районе корпоративного г. Острава интенсивно эксплуатировались нижние слои грунта. После прекращения добычи угля в 1994 г. постепенное оседание поверхности города замедлилось. Созданная цифровая техническая карта г. Остравы (DTMMO) восходит к 1992 г. При работе с пластом возникающее исходное геостатическое и тектоническое возбуждение приводит к изменениям в окружающих пласт горных массивах, которые сопровождаются преобразованием пород и перемещениями в направлении забоя. Разрушение проявляется в морфологии ландшафта в самых разных формах, которые можно подразделить на непрерывные и разрывные деформации. Поэтому остаточные явления горных разработок могут оказывать влияние на позиционную точность DTMMO за последние 18 лет. Для анализа была выбрана топографическая плита Богумин 8-9/43 в кадастровом районе Привоз.
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Frommholz, D., M. Linkiewicz, and A. M. Poznanska. "INLINING 3D RECONSTRUCTION, MULTI-SOURCE TEXTURE MAPPING AND SEMANTIC ANALYSIS USING OBLIQUE AERIAL IMAGERY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B3 (June 9, 2016): 605–12. http://dx.doi.org/10.5194/isprsarchives-xli-b3-605-2016.
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This paper proposes an in-line method for the simplified reconstruction of city buildings from nadir and oblique aerial images that at the same time are being used for multi-source texture mapping with minimal resampling. Further, the resulting unrectified texture atlases are analyzed for fac¸ade elements like windows to be reintegrated into the original 3D models. Tests on real-world data of Heligoland/ Germany comprising more than 800 buildings exposed a median positional deviation of 0.31 m at the fac¸ades compared to the cadastral map, a correctness of 67% for the detected windows and good visual quality when being rendered with GPU-based perspective correction. As part of the process building reconstruction takes the oriented input images and transforms them into dense point clouds by semi-global matching (SGM). The point sets undergo local RANSAC-based regression and topology analysis to detect adjacent planar surfaces and determine their semantics. Based on this information the roof, wall and ground surfaces found get intersected and limited in their extension to form a closed 3D building hull. For texture mapping the hull polygons are projected into each possible input bitmap to find suitable color sources regarding the coverage and resolution. Occlusions are detected by ray-casting a full-scale digital surface model (DSM) of the scene and stored in pixel-precise visibility maps. These maps are used to derive overlap statistics and radiometric adjustment coefficients to be applied when the visible image parts for each building polygon are being copied into a compact texture atlas without resampling whenever possible. The atlas bitmap is passed to a commercial object-based image analysis (OBIA) tool running a custom rule set to identify windows on the contained fac¸ade patches. Following multi-resolution segmentation and classification based on brightness and contrast differences potential window objects are evaluated against geometric constraints and conditionally grown, fused and filtered morphologically. The output polygons are vectorized and reintegrated into the previously reconstructed buildings by sparsely ray-tracing their vertices. Finally the enhanced 3D models get stored as textured geometry for visualization and semantically annotated ”LOD-2.5” CityGML objects for GIS applications.
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Frommholz, D., M. Linkiewicz, and A. M. Poznanska. "INLINING 3D RECONSTRUCTION, MULTI-SOURCE TEXTURE MAPPING AND SEMANTIC ANALYSIS USING OBLIQUE AERIAL IMAGERY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B3 (June 9, 2016): 605–12. http://dx.doi.org/10.5194/isprs-archives-xli-b3-605-2016.
Full textAbstract:
This paper proposes an in-line method for the simplified reconstruction of city buildings from nadir and oblique aerial images that at the same time are being used for multi-source texture mapping with minimal resampling. Further, the resulting unrectified texture atlases are analyzed for fac¸ade elements like windows to be reintegrated into the original 3D models. Tests on real-world data of Heligoland/ Germany comprising more than 800 buildings exposed a median positional deviation of 0.31 m at the fac¸ades compared to the cadastral map, a correctness of 67% for the detected windows and good visual quality when being rendered with GPU-based perspective correction. As part of the process building reconstruction takes the oriented input images and transforms them into dense point clouds by semi-global matching (SGM). The point sets undergo local RANSAC-based regression and topology analysis to detect adjacent planar surfaces and determine their semantics. Based on this information the roof, wall and ground surfaces found get intersected and limited in their extension to form a closed 3D building hull. For texture mapping the hull polygons are projected into each possible input bitmap to find suitable color sources regarding the coverage and resolution. Occlusions are detected by ray-casting a full-scale digital surface model (DSM) of the scene and stored in pixel-precise visibility maps. These maps are used to derive overlap statistics and radiometric adjustment coefficients to be applied when the visible image parts for each building polygon are being copied into a compact texture atlas without resampling whenever possible. The atlas bitmap is passed to a commercial object-based image analysis (OBIA) tool running a custom rule set to identify windows on the contained fac¸ade patches. Following multi-resolution segmentation and classification based on brightness and contrast differences potential window objects are evaluated against geometric constraints and conditionally grown, fused and filtered morphologically. The output polygons are vectorized and reintegrated into the previously reconstructed buildings by sparsely ray-tracing their vertices. Finally the enhanced 3D models get stored as textured geometry for visualization and semantically annotated ”LOD-2.5” CityGML objects for GIS applications.
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Frommholz, D., M. Linkiewicz, H. Meissner, and D. Dahlke. "RECONSTRUCTING BUILDINGS WITH DISCONTINUITIES AND ROOF OVERHANGS FROM OBLIQUE AERIAL IMAGERY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-1/W1 (May 31, 2017): 465–71. http://dx.doi.org/10.5194/isprs-archives-xlii-1-w1-465-2017.
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This paper proposes a two-stage method for the reconstruction of city buildings with discontinuities and roof overhangs from oriented nadir and oblique aerial images. To model the structures the input data is transformed into a dense point cloud, segmented and filtered with a modified marching cubes algorithm to reduce the positional noise. Assuming a monolithic building the remaining vertices are initially projected onto a 2D grid and passed to RANSAC-based regression and topology analysis to geometrically determine finite wall, ground and roof planes. If this should fail due to the presence of discontinuities the regression will be repeated on a 3D level by traversing voxels within the regularly subdivided bounding box of the building point set. For each cube a planar piece of the current surface is approximated and expanded. The resulting segments get mutually intersected yielding both topological and geometrical nodes and edges. These entities will be eliminated if their distance-based affiliation to the defining point sets is violated leaving a consistent building hull including its structural breaks. To add the roof overhangs the computed polygonal meshes are projected onto the digital surface model derived from the point cloud. Their shapes are offset equally along the edge normals with subpixel accuracy by detecting the zero-crossings of the second-order directional derivative in the gradient direction of the height bitmap and translated back into world space to become a component of the building. As soon as the reconstructed objects are finished the aerial images are further used to generate a compact texture atlas for visualization purposes. An optimized atlas bitmap is generated that allows perspectivecorrect multi-source texture mapping without prior rectification involving a partially parallel placement algorithm. Moreover, the texture atlases undergo object-based image analysis (OBIA) to detect window areas which get reintegrated into the building models. To evaluate the performance of the proposed method a proof-of-concept test on sample structures obtained from real-world data of Heligoland/Germany has been conducted. It revealed good reconstruction accuracy in comparison to the cadastral map, a speed-up in texture atlas optimization and visually attractive render results.
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Suk, Petr, and Martin Klimánek. "Creation of the snow avalanche susceptibility map of the Krkonoše Mountains using GIS." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 59, no. 5 (2011): 237–46. http://dx.doi.org/10.11118/actaun201159050237.
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This article deals with the development of the snow avalanche susceptibility map in the Czech part of the Krkonoše Mountains using the free Geographic Information System (GIS) GRASS. The area susceptibility map consists of two components: the morphological risk map, which is derived from the digital terrain model (DTM) and describes the slope steepness, aspect and curvature of the slope, and the protecting vegetation influence map, which is based on supervised image classification (spectrozonal aerial photos) and takes into consideration the importance of vegetation cover. The final map also includes starting zones calculated on the basis of significant changes in slope steepness and approximate shapes of avalanche paths based on these zones. In the map development, the layer of measured paths of avalanche cadastre in the Czech part of the Krkonoše Mountains was used, partly to gain the morphological characteristics of starting zones and partly to check the quality of the map.
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Dahle, F., K. Arroyo Ohori, G. Agugiaro, and S. Briels. "AUTOMATIC CHANGE DETECTION OF DIGITAL MAPS USING AERIAL IMAGES AND POINT CLOUDS." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B2-2021 (June 28, 2021): 457–64. http://dx.doi.org/10.5194/isprs-archives-xliii-b2-2021-457-2021.
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Abstract. In many countries digital maps are generally created and provided by Cadastre, Land Registry or National Mapping Agencies. These maps must be accurate and well maintained. However, in most cases, the update process of these maps is still done by hand, often using satellite or aerial imagery. Supporting this process via automatic change detection based on traditional classification algorithms is difficult due to the high level of noise in the data, such as introduced by temporary changes (e.g. cars being parked). This paper describes a method to detect changes between two time steps using 2.5D data and to transfer these insights to a digital map. For every polygon in the map, several attributes are collected from the input data, which are used to train a machine-learning model based on gradient boosting. A case study in Haarlem, in the Netherlands, was conducted to test the performance of this proposed approach. Results show that this methodology can recognize a substantial amount of changes and can support – and speed up – the manual updating process.
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Salikhov, T. K., K. S. Baikov, T. S. Salikhova, M. K. Tynykulov, N. N. Nurmukhametov, and A. S. Salykova. "THE STUDY OF THE CURRENT STATE OF THE SOIL COVER OF THE AKSHAT RURAL COUNTY OF WEST KAZAKHSTAN REGION ON THE BASIS OF GIS TECHNOLOGIES." NEWS of National Academy of Sciences of the Republic of Kazakhstan 6, no. 444 (December 15, 2020): 220–27. http://dx.doi.org/10.32014/2020.2518-170x.150.
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The rational use and protection of soils in market conditions requires adequate application of new scientific and methodological approaches. One of such systematic-analytical methods of soil cadastre organizations is a combination of traditional terrestrial methods with technologies of geoinformation systems (GIS) based on extensive use of satellite images in different resolutions. The aggregate of information necessary for mapping soil cover patterns and their quantification has been described in GIS databases. Data integration has been realized through the spatial and attributive component in the form of: the results of topographic and thematic maps. At the same time, the creation of attributive GIS databases involves the digitization of thematic maps tied into a single cartographic projection (as a topographic map with a scale of 1: 50 000). As a result of the study, thematic maps and attributive databases of GIS of soils were formed. As a result of research, based on GIS technology, a digital soil map of the Akshat rural county of the Chingirlau district of the West Kazakhstan region has been developed using the ArcGIS software product.
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Portnov, A. M. "Unified approach to spatial description of objects terrain departmental registries / cadastres as a perspective basis of the state system territory mapping." Geodesy and Cartography 942, no. 12 (January 20, 2019): 41–49. http://dx.doi.org/10.22389/0016-7126-2018-942-12-41-49.
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Using unified principles of formation and maintenance of register/cadaster with information about spatial data of landscape objects as the informational and technological basis for updating the public topographic maps and modernization of state cartographic system is proposed. The problems of informational relevancy of unified electronical cartographic basis and capacity of its renovation in case of public cadaster map data. The need to modernize the system of classification and coding of cartographic information, the use of unified standards for the coordinate description of register objects for their topological consistency, verification and updating is emphasized. Implementing such solutions is determined by economical expediency as well as necessity of providing a variety of real thematic data for wide range of consumers in the field of urban planning, territories development and completing the tasks of Governmental program “Digital economy of the Russian Federation”.
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Barbieri, Andrea, and Carlos López-Vázquez. "Admissible relative errors of the parcel aerea of a land parcel map base created as a synthesis of indiviual survey maps." Revista Cartográfica, no. 98 (June 6, 2019): 13–32. http://dx.doi.org/10.35424/rcarto.i98.31.
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Today the land parcel map of Uruguay is available as an updated, integrated legacy digital cadastre which planimetric accuracy is not enough to assure geometric interoperability. The creation of a brand new land parcel map is being considered with a procedure yet to be defined but in any case subject to reasonable goals in terms of geometric accuracy. In this paper we have tested a direct procedure in which each parcel is joined to its immediate neighbors until a block is formed. In Uruguay such block will grow until a road, river or similar object is found. The block is manually inserted within the road network, which has absolute coordinates.The rural survey maps (approx. 250 000) are already scanned but they need to be vectorized and edited through scaling, rotation and manual matching to its neighbors. GNSS tracks for roads and highways are available for the whole country, so we could fit the block within them in order to properly register it. The resulting geometric accuracy was evaluated in terms of the relative error in area, which has a normal distribution with a mean 0.10% and a standard deviation 3.51%, leaving 82.0% of the parcels with relative area error less than 5%. The planimetric error, crucial to assure interoperability, was 53.79 m at the 95% confidence level.
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Bekker, I., and Y. Felus. "QUALITY CONTROL FOR CROWDSOURCING LARGE SCALE TOPOGRAPHIC MAPS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W13 (June 5, 2019): 1201–5. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w13-1201-2019.
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<p><strong>Abstract.</strong> Crowdsourcing is an emerging methodology for spatial data collection. This methodology has been used extensively to create small scale maps such as in OpenStreetMap. However, it has rarely been used in acquiring large scale, accurate engineering data. Expert-sourcing uses methods similar to crowdsourcing except that it collects information from experts and professionals. This article describes the development steps of novel expert-sourcing methodologies for updating the national geo-spatial database (cadastre and topography) in Israel. The input data for the process are building permit maps at a scale of 1&thinsp;:&thinsp;250 created by professionals. The first step in the process was the adaptation of a national standard for digital map contents, cartography and computer format. The second step was the development of the crowdsourcing system to get the maps from mapping professionals, assess them and verify that they meet the criteria. The two challenges in this step were to design an engaging User Experience (UX) that will not require training or a user manual and to develop automatic quality control tools. The third step was the creation of a data integration process to update the national database from the various sources. The system (aka TopoCad) provides a comprehensive set of tools to support the practice of obtaining information from all the surveyors and mapping experts in Israel. The system aggregates all the information of every mapping activity (geodesy, cadastre, construction permits, mapping and GIS) in a semi-automatic process. This novel platform improved governmental procedures and made services more efficient. In addition, this innovative tool improved the national databases by updating them with new data on an on-going basis.</p>
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Dušánek, Petr. "Exploitation of Countrywide Airborne Lidar Dataset for Documentation of Historical Human Activities in Countryside." Geoinformatics FCE CTU 6 (December 21, 2011): 97–102. http://dx.doi.org/10.14311/gi.6.13.
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During three years (2010 – 12) The Czech Office for Surveying, Mapping and Cadastre in cooperation with The Ministry of Defense of the Czech Republic and The Ministry of Agriculture of the Czech Republic are providing mapping of the entire area of the Czech Republic by Airborne laser scanning (ALS) technology. The goal of this project is to derive a highly accurate Digital Terrain Model (DTM) for purposes of administration like detection of flooded areas, orthorectification of areal images etc. Such data set also seems to be an interesting da ta source for mapping of human activities in countryside. Human settlements, agriculture or mining activities left significant scars on natural landscape. These significant man-made structures are a part of so called cultural landscape. Man-made structures include ancient settlements, remains of medieval mining activities or remains of settlements abandoned during 20th century. This article generally presents how to derive information about the man-made structures from raw LiDAR. Examples of significant findings of man-made imprints in countryside are also presented. Goal of this article is not to describe a certain archeological site but to inform about strengths of ALS data to map human activities in countryside, mainly in forested areas.
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El-Ashmawy, Khalid L. A. "Investigation of the Accuracy of Google Earth Elevation Data." Artificial Satellites 51, no. 3 (September 1, 2016): 89–97. http://dx.doi.org/10.1515/arsa-2016-0008.
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Abstract Digital Elevation Models (DEMs) comprise valuable source of elevation data required for many engineering applications. Contour lines, slope - aspect maps are part of their many uses. Moreover, DEMs are used often in geographic information systems (GIS), and are the most common basis for digitally-produced relief maps. This paper proposes a method of generating DEM by using Google Earth elevation data which is easier and free. The case study consisted of three different small regions in the northern beach in Egypt. The accuracy of the Google earth derived elevation data are reported using root mean square error (RMSE), mean error (ME) and maximum absolute error (MAE). All these accuracy statistics were computed using the ground coordinates of 200 reference points for each region of the case study. The reference data was collected with total station survey. The results showed that the accuracies for the prepared DEMs are suitable for some certain engineering applications but inadequate to meet the standard required for fine/small scale DEM for very precise engineering study. The obtained accuracies for terrain with small height difference can be used for preparing large area cadastral, city planning, or land classification maps. In general, Google Earth elevation data can be used only for investigation and preliminary studies with low cost. It is strongly concluded that the users of Google Earth have to test the accuracy of elevation data by comparing with reference data before using it.
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De Maeyer, Philippe. "Mapping in Belgium in the 19th Century in a wider context." Abstracts of the ICA 1 (July 15, 2019): 1. http://dx.doi.org/10.5194/ica-abs-1-56-2019.
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<p><strong>Abstract.</strong> An important phenomenon in cartography in the 19th Century is the emergence of thematic cartography and especially distribution maps. The latter represent the spatial distribution of a particular feature in an area. Distribution maps may be qualitative such as those representing the land use or land cover, geological maps, … or also quantitative, such as maps representing the population distribution by dots or isolines.</p><p> Even if in the 18th C. (or even earlier), some thematic maps were drawn, the real development of the thematic mapping only started in the 19th C. In cartographic literature, large attention was paid to the cholera map of Snow from 1854. It has often been cited (also in geographical information science) as an example of early spatial analysis; what he visually did is today a well-known technique and methodology of buffer analysis in GIS. But the most impressive thematic maps are the early 19th C. chronostratigraphical maps, mostly described as geological maps. This type of inventory maps - important till the end of the 20th C. &ndash; are now completely substituted by digital data.</p><p> If the development of thematical maps was an answer on one hand to industrialisation and changing ideas about the concept of richness, it was on the other hand also only made possible by the development of new printing techniques. Belgium was a forerunner in realizing geological maps. Already in the Dutch period (1815&ndash;1830) systematic field observations were executed in the southern part of Belgium. In this period a map was realized representing ore deposits (“<i>Geologische kaart van een gedeelte der Nederlanden</i>”), under the direction of J.E. Van Gorkum, with scientific input by professor Van Breda; the map was published in the Netherlands in 1834, after Belgian independency.</p><p> The map is also interesting from another point of view as it is representing the triangulation network the Dutch established in Belgium before 1830 in the framework of the Military Reconnaissance. They were part of a systematic mapping project under supervision of the Topographical Bureau with a section responsible for the Northern provinces and one for the Southern provinces, which realized those Military Reconnaissance maps. Captain Erzey executed a triangulation over the southern provinces. Later on, those coordinates served Vander Maelen to realize his 1&thinsp;:&thinsp;20&thinsp;000 and 1&thinsp;:&thinsp;80&thinsp;000 topographical mapping of Belgium.</p><p> On the one hand, the awareness that a new and a more precise surveying and cartography was needed and on the other hand that inventories of different thematic data were needed, must be seen not only in the context of industrialization but also in the change of the role of landownership in the society through the ages.</p><p> In the Middle Ages and the Renaissance, the landownership was a synonym for richness. The land-owners (abbeys, noblemen, …) could collect taxes based on this ownership (the so-called taxation paradigm). In the 19th Century, land also became a good that could be traded. The trading land also induced a need for a stricter legal framework. In France, typically Napoleon erected not only the Cadastre Law to partition the tax collection more fairly but he also mentioned “<i>Un bon cadastre parcellaire sera le complément de mon code en ce qui concerne la possession du sol. Il faut que les plans soient assez exacts et assez développés pour servir à fixer les limites des propriétés et empêcher les procès.</i>” (“<i>A good land cadastre will be the complement of my code regarding the ownership of the soil. Maps must be accurate enough and developed enough to set property boundaries and prevent lawsuits</i>”) (Letter of Napoleon to his Minister of Finance Mollien). This period when land also became a negotiable good fits in a so-called legal paradigm.</p><p> The land registry reform affecting the whole French Empire cannot be seen separately from the reform Napoleon wished to set up for his topographical maps. Napoleon established a commission that had to define the cartographic system of a new topographic map covering the French Empire. Even if the ellipsoid of Delambre and the Bonne projection were retained, the map production could never be launched. The measurements of Captain Erzey in the Dutch period can be considered as the first attempt (in Belgium) to map the territory on a geodetically correct basis.</p><p> During one and a half century the negotiable aspect of land was predominant. Map making was requiring the best available geometric accuracy. The needs of map making changed fundamentally when land also became scarcer, when it became a scarce good. The increasing need for planning in the second part of the 20th C. for the sake of land scarcity finally induced &ndash; when techniques (in particular GIS) would allow it - the development of multi-purpose spatial data systems.</p></p>
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Faltýnová, M., and P. Nový. "Airborne Laser Scanning and Image Processing Techniques for Archaeological Prospection." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-5 (June 6, 2014): 231–35. http://dx.doi.org/10.5194/isprsarchives-xl-5-231-2014.
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Aerial photography was, for decades, an invaluable tool for archaeological prospection, in spite of the limitation of this method to deforested areas. The airborne laser scanning (ALS) method can be nowadays used to map complex areas and suitable complement earlier findings. This article describes visualization and image processing methods that can be applied on digital terrain models (DTMs) to highlight objects hidden in the landscape. Thanks to the analysis of visualized DTM it is possible to understand the landscape evolution including the differentiation between natural processes and human interventions. Different visualization methods were applied on a case study area. A system of parallel tracks hidden in a forest and its surroundings – part of old route called "Devil's Furrow" near the town of Sázava was chosen. The whole area around well known part of Devil's Furrow has not been prospected systematically yet. The data from the airborne laser scanning acquired by the Czech Office for Surveying, Mapping and Cadastre was used. The average density of the point cloud was approximately 1 point/m<sup>2</sup> The goal of the project was to visualize the utmost smallest terrain discontinuities, e.g. tracks and erosion furrows, which some were not wholly preserved. Generally we were interested in objects that are clearly not visible in DTMs displayed in the form of shaded relief. Some of the typical visualization methods were tested (shaded relief, aspect and slope image). To get better results we applied image-processing methods that were successfully used on aerial photographs or hyperspectral images in the past. The usage of different visualization techniques on one site allowed us to verify the natural character of the southern part of Devil’s Furrow and find formations up to now hidden in the forests.
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Brumana, R., M. Santana Quintero, L. Barazzetti, M. Previtali, F. Banfi, D. Oreni, D. Roels, and F. Roncoroni. "Towards a virtual hub approach for landscape assessment and multimedia ecomuseum using multitemporal-maps." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-5/W7 (August 11, 2015): 49–56. http://dx.doi.org/10.5194/isprsarchives-xl-5-w7-49-2015.
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Landscapes are dynamic entities, stretching and transforming across space and time, and need to be safeguarded as living places for the future, with interaction of human, social and economic dimensions. To have a comprehensive landscape evaluation several open data are needed, each one characterized by its own protocol, service interface, limiting or impeding this way interoperability and their integration. Indeed, nowadays the development of websites targeted to landscape assessment and touristic purposes requires many resources in terms of time, cost and IT skills to be implemented at different scales. For this reason these applications are limited to few cases mainly focusing on worldwide known touristic sites. The capability to spread the development of web-based multimedia virtual museum based on geospatial data relies for the future being on the possibility to discover the needed geo-spatial data through a single point of access in an homogenous way. In this paper the proposed innovative approach may facilitate the access to open data in a homogeneous way by means of specific components (the brokers) performing interoperability actions required to interconnect heterogeneous data sources. In the specific case study here analysed it has been implemented an interface to migrate a geo-swat chart based on local and regional geographic information into an user friendly Google Earth<sup>©</sup>-based infrastructure, integrating ancient cadastres and modern cartography, accessible by professionals and tourists via web and also via portable devices like tables and smartphones. The general aim of this work on the case study on the Lake of Como (Tremezzina municipality), is to boost the integration of assessment methodologies with digital geo-based technologies of map correlation for the multimedia ecomuseum system accessible via web. The developed WebGIS system integrates multi-scale and multi-temporal maps with different information (cultural, historical, landscape levels) represented by thematic icons allowing to transfer the richness of the landscape value to both tourists and professionals.
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Maia, Frederico F. R., and Levimar R. Araújo. "Aspectos psicológicos e controle glicêmico de um grupo de pacientes com Diabetes Mellitus tipo 1 em Minas Gerais." Arquivos Brasileiros de Endocrinologia & Metabologia 48, no. 2 (April 2004): 261–66. http://dx.doi.org/10.1590/s0004-27302004000200009.
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O perfil psicológico e o grau de aceitação do diabetes mellitus tipo 1 (DM1) parecem influênciar diretamente os níveis glicêmicos. Neste trabalho avaliou-se a influência do perfil psicológico nos níveis glicêmicos de pacientes com DM1. Foi realizada análise retrospectiva do cadastro dos participantes do projeto Diabetes Weekend (DW), colônia de fim de semana para DM 1 em Minas Gerais. Em 150 pacientes (66M/84F, 21,6±13,5 anos e duração de DM1 de 8,5±7,9 anos) foram estudados: esquema insulínico, forma de administração de insulina, dose diária de insulina e dose diária na colônia DW, perfil psicológico, glicemia capilar e passado de crise convulsiva, hipoglicemia grave ou cetoacidose (CAD). A glicemia foi monitorizada 4 vezes ao dia com glicosímetro digital. Quanto à forma como os pacientes estão lidando com a doença, 20,9% relataram estar muito bem (G1), 39,5%, bem (G2), 25,6% com dificuldade de controle glicêmico (G3), 9,3% tentando aceitar (G4) e 4,7% relataram estar "péssimos" em relação ao DM1. A glicemia capilar média (GCM, em mg/dl) foi significativamente menor no G1 (169,8; G2: 182,3; G3: 199,3; G4: 200,7). Não houve associação signficante com a história pregressa de CAD, hipoglicemias ou convulsão. A menor aceitação da doença esteve relacionada à duração do DM1 superior a 5 anos (p= 0,017) e à idade (p= 0,000). 13,9% dos pacientes relatam ter vergonha de dizer em público que são diabéticos. A GCM foi significativamente maior nesse grupo em relação aos que não têm vergonha de assumir a doença (246,2 vs. 178,1; p= 0,007). Nos 91 pacientes (60,4%) que relatam ter medo de "passar mal" em público a GCM foi significativamente maior (200,4 vs. 184,5; p= 0,014). A monitorização glicêmica sistemática demonstrou associação positiva entre as dificuldades de lidar com a doença (aspectos psicológicos) e pior controle glicêmico. É importante a abordagem psicológica e multidisciplinar do diabético na busca de um melhor controle metabólico, prevenção de complicações futuras e melhora da qualidade de vida desses indivíduos.
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Tran Quoc, Binh, Pham Thanh Xuan, Pham Le Tuan, Le Phuong Thuy, Nguyen Xuan Linh, and Man Quang Huy. "Calculating real surface area of land parcels in hilly and mountainous regions." VNU Journal of Science: Earth and Environmental Sciences 33, no. 4 (December 29, 2017). http://dx.doi.org/10.25073/2588-1094/vnuees.4196.
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Currently, the legal area of a land parcel in cadastral map is defined as the projected area of the parcel on a map plane. However, in practice, the real surface area of parcels plays important role for land use. In plain regions, the differences between real and legal areas of parcels are negligible, but in hilly and mountainous regions, these differences are significant and must be accounted in land management.
In this paper, the authors had proposed a method for calculating real surface area of land parcels using GIS and data extracted from digital elevation models. The method was verified against Vietnam’s standard on cadastral map by using a simulated land parcel that is a part of a sphere, and got positive results. The method is then applied for calculating surface area of more than 2000 land parcels in Tien Xuan Commune, Thach That District, Hanoi City. The obtained results showed that the differences between real and legal areas of land parcels can reach a value of 23% for forestry land at mountain side with slope of more than 30o. In whole Tien Xuan Commune, these differences have an average value of 2.4%.
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Nila Rekha, P., R. Gangadharan, Shirley Dharshini, Wilmart Clark, G. Ramanathan, Deboral Vimala, A. Panigrahi, and C. Gopal. "Digital database on shrimp farming in coastal watershed of Cuddalore District, Tamil Nadu." Indian Journal of Fisheries 64 (December 26, 2017). http://dx.doi.org/10.21077/ijf.2017.64.special-issue.76191-06.
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Brackishwater shrimp farming is essentially a coastal farming activity, making use of the marginal land and water resources resulting in economic benefits, providing livelihood option for the coastal poor and contributing to the national GDP. Getting successful crop by the farmers is indeed a great accomplishment since the disease threat always hovers around shrimp culture. This warrants the adoption of better management practices starting from the pond construction till the harvest of the shrimp with a collective action among the shrimp farmers in a cluster of farms with respect to stocking, adoption of biosecurity measures, disease management and discharge of treated water. For practically enforcing this through farmers’ associations, development of spatial database is a prerequisite and it is a relatively easy task in this age of information revolution. With this background, a digital information system has been built using ArcGIS 10.0 for the shrimp farms in the coastal watershed of Cuddalore District in TamilNadu primarily to aid farmers. The developed spatial database contains information about all the shrimp farms in Cuddalore District and it has been digitised from GeoEye with the cadastral map in the scale of 1:5000. A total of 4 km2 of shrimp farm area with 351 individual ponds spread over six clusters of farms has been digitised with their survey number. Field surveys were conducted to verify the satellite data. Details of the farms’were collected using a structured questionnaire and have been incorporated in thedatabase. Using this database both spatial and statistical information can be analysed and managed for querying, decision making and resource management. This digital information will also be handy for the policymakers for licensing the farm, monitoring growth and to enforce environmental guidelines.
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Junarto, Rohmat, and Djurjani Djurjani. "Pemanfaatan Teknologi Unmanned Aerial Vehicle (UAV) untuk Pemetaan Kadaster." BHUMI: Jurnal Agraria dan Pertanahan 6, no. 1 (May 15, 2020). http://dx.doi.org/10.31292/jb.v6i1.428.
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Abstract: Geospatial data (on horizontal and vertical positions) play an important role in decision making.Regarding that, the issue of funds, diversity of areas, human resources, and non-updated data become great obstacles. This study aims to examine the technological capabilities of Unmanned Aerial Vehicles (UAVs) or Unmanned Aircraft in acquiring and updating geospatial data, evaluating and inspecting changes in the conversion of agricultural land and the environment, as well as describing orthophoto extraction opportunities in digital services based on multipurpose cadastre. This research used a model combination method (concurrent triangulation). Several alternative requirements were derived to design methods of mapping, processing and controlling the quality of application to the concept of Fit For Purpose Land Administration (FFP-LA), and layering with Geographic Information Systems (GIS). The final product of this system is effective to produce and update land base map, evaluate and inspect changes in the conversion of land functions as well as facilitate digital services. The availability of open source software efficiently extracts and combines terrestrial and photogrammetric mapping products in real time and has the opportunity to realize multipurpose cadastre. The involvement of local human resources is applied to ensure legal certainty in the land registration system as well as to improve and strengthen the management of agrarian resourcesAbstract: Geospatial data (on horizontal and vertical positions) play an important role in decision making.Regarding that, the issue of funds, diversity of areas, human resources, and non-updated data become great obstacles. This study aims to examine the technological capabilities of Unmanned Aerial Vehicles (UAVs) or Unmanned Aircraft in acquiring and updating geospatial data, evaluating and inspecting changes in the conversion of agricultural land and the environment, as well as describing orthophoto extraction opportunities in digital services based on multipurpose cadastre. This research used a model combination method (concurrent triangulation). Several alternative requirements were derived to design methods of mapping, processing and controlling the quality of application to the concept of Fit For Purpose Land Administration (FFP-LA), and layering with Geographic Information Systems (GIS). The final product of this system is effective to produce and update land base map, evaluate and inspect changes in the conversion of land functions as well as facilitate digital services. The availability of open source software efficiently extracts and combines terrestrial and photogrammetric mapping products in real time and has the opportunity to realize multipurpose cadastre. The involvement of local human resources is applied to ensure legal certainty in the land registration system as well as to improve and strengthen the management of agrarian resources