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Journal articles on the topic 'Aerial photography in geography'
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Eyton, J. Ronald. "Student Aerial Photography." Geocarto International 20, no. 4 (December 2005): 65–73. http://dx.doi.org/10.1080/10106040508542366.
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Piekielek, Nathan. "A semi-automated workflow for processing historic aerial photography." Abstracts of the ICA 1 (July 15, 2019): 1. http://dx.doi.org/10.5194/ica-abs-1-299-2019.
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<p><strong>Abstract.</strong> Libraries, museums and archives were the original big geospatial information repositories that to this day house thousands to millions of resources containing research-quality geographic information. However, these print resources (and their digital surrogates), are not easily incorporated into the contemporary research process because they are not structured data that is required of web-mapping and geographic information system tools. Fortunately, contemporary big data tools and methods can help with the large-scale conversion of historic resources into structured datasets for mapping and spatial analysis.</p><p>Single frame historic aerial photographs captured originally on film (hereafter “photographs”), are some of the most ubiquitous and information-rich geographic information resources housed in libraries, museums and archives. Photographs authentically encoded information about past places and time-periods without the thematic focus and cartographic generalization of historic print maps. As such, they contain important information in nearly every category of base mapping (i.e. transportation networks, populated places etc.), that is useful to a broad spectrum of research projects and other applications. Photographs are also some of the most frustrating historic resources to use due to their very large map-scale (i.e. small geographic area), lack of reference information and often unknown metadata (i.e. index map, flight altitude, direction etc.).</p><p>The capture of aerial photographs in the contiguous United States (U.S.) became common in the 1920s and was formalized in government programs to systematically photograph the nation at regular time intervals beginning in the 1930s. Many of these photography programs continued until the 1990s meaning that there are approximately 70 years of “data” available for the U.S. that is currently underutilized due to inaccessibility and the challenges of converting photographs to structured data. Large collections of photographs include government (e.g. the U.S. Department of Agriculture Aerial Photography Field Office “The Vault” – over 10 million photographs), educational (e.g. the University of California Santa Barbara Library – approximately 2.5 million photographs), and an unknown number non-governmental organizations (e.g. numerous regional planning commissions and watershed conservation groups). Collectively these photography resources constitute an untapped big geospatial data resource.</p><p>U.S. government photography programs such as the National Agricultural Imagery Program continued and expanded in the digital age (i.e. post early 2000s), so that not only is there opportunity to extend spatial analyses back in time, but also to create seamless datasets that integrate with current and expected future government aerial photography campaigns. What is more, satellite imagery sensors have improved to the point that there is now overlap between satellite imagery and aerial photography in terms of many of their technical specifications (i.e. spatial resolution etc.). The remote capture of land surface imagery is expanding rapidly and with it are new opportunities to explore long-term land-change analyses that require historical datasets.</p><p>Manual methods to process photographs are well-known, but are too labour intensive to apply to entire photography collections. Academic research on methods to increase the discoverability of photographs and convert them to geospatial data at large-scale has to date been limited (although see the work of W. Karel et al.). This presentation details a semi-automated workflow to process historic aerial photographs from U.S. government sources and compares the workflow and results to existing methods and datasets. In a pilot test area of 94 photographs in the U.S. state of Pennsylvania, the workflow was found to be nearly 100-times more efficient than commonly employed alternatives while achieving greater horizontal positional accuracy. Results compared favourably to contemporary digital aerial photography data products, suggesting that they are well-suited for integration with contemporary datasets. Finally, initial results of the workflow were incorporated into several existing online discovery and sharing platforms that will be highlighted in this presentation. Early online usage statistics as well as direct interaction with users demonstrates the broad interest and high-impact of photographs and their derived products (i.e. structured geospatial data).</p>
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Barrell, Jeffrey, and Jon Grant. "High-resolution, low-altitude aerial photography in physical geography." Progress in Physical Geography: Earth and Environment 39, no. 4 (May 5, 2015): 440–59. http://dx.doi.org/10.1177/0309133315578943.
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Intertidal landscapes are highly complex and dynamic habitats that exhibit variability over a range of spatial and temporal scales. The spatial arrangement of structure-forming biogenic features such as seagrasses and bivalves influences ecosystem function and the provision of important ecosystem services, though quantification and monitoring of intertidal landscape structure has been hindered by challenges collecting spatial data in the coastal zone. In this study, an intertidal landscape mosaic of eelgrass ( Zostera marina) and blue mussels ( Mytilus edulis) was observed using low-altitude aerial photography from a balloon-mounted digital camera platform. Imagery representing seagrass-bivalve landscape structure was classified and analysed using multiple metrics of landscape composition and configuration at the patch scale and the landscape scale. Patch-scale imagery was compared to a previously collected dataset in order to track temporal changes in seagrass patch metrics over a 26-month period. Seagrass and bivalve patches exhibited distinct spatial patterning at different spatial scales. At the patch scale, the change in seagrass metrics was consistent with patch border expansion at the expense of patch density and integrity. These methods demonstrate a novel approach for collecting high-resolution spatial data that could also be valuable to physical geographers dealing with similar fine-scale landscapes. The application of spatial metrics at multiple spatial scales quantified elements of the configuration and composition of a seagrass-bivalve habitat mosaic and allowed for the tracking of patch metrics through time to depict landscape change. Continued development of landscape metrics within intertidal habitats will increase understanding of the ecological function of these areas with benefits to management and monitoring of ecosystem health.
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Lazorenko, Nadiia. "GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY." GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY 95,2022, no. 95 (June 28, 2022): 113–28. http://dx.doi.org/10.23939/istcgcap2022.95.113.
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The purpose of this work is to study the integration of sets of core reference and thematic geospatial data based on the JOIN operation of relational algebra and its interaction with geocoding of geospatial features, which is implemented in modern geographic information systems (GIS) and database management systems (hereinafter – DBMS) for the development of the national spatial data infrastructure (hereinafter – NSDI). Method. The research is based on the analysis of the possibilities of applying the theory of geospatial databases and knowledge bases, international and national harmonized standards in the field of Geographic Information/ Geomatics to solve the problem of integration of geospatial data using the operation JOIN relational algebra in object-relational database management systems (OR DBMS). Results. The paper examines the models of the Join operation of relational algebra, which underlie the geocoding of features and the creation of electronic gazetteers, and proves its effectiveness: the Join operation integrates of core reference and thematic geospatial datasets. There is a need to define the required geographic identifiers, which must be present among the attributes of the core reference and thematic geospatial datasets to perform the join. The variety of uses of the Join operation covers all possible cases that arise in their practical application. Thus, the use of the Join operation involves identifying these required geographic identifiers at the geospatial database design stage. In particular, it is expedient to determine mandatory geographical identifiers (codes) of features according to the official national systems of features classification (codification) in the relevant sectoral thematic registers, which are responsible for certain holders of thematic data in accordance with Annex 2 of the Decree of Cabinet of Ministers “The order for the functioning of the national spatial data infrastructure” of May 26, 2021, № 532. Scientific novelty and practical significance. The integration of core reference data and thematic geospatial datasets based on JOIN operation models of relational algebra and their interaction with geocoding of geospatial features is researched, which is implemented in modern GIS and DBMS for the development of national spatial data infrastructure. The research was performed on a set of core reference spatial data, namely: information on administrative-territorial units of the Cherkasy region, including their borders; the data from the statistical bulletin of the socio-economic situation of the Cherkasy region for January 2021 of the Main Department of Statistics in Cherkasy region of the State Statistics Service of Ukraine were selected as thematic data. It has been shown that relational algebra join (JOIN) operations can be used to integrate other thematic geospatial data with core reference data using geographic identifiers that contain these datasets.
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Loureiro, Nuno de Santos. "Photography, Land-Cover and Land-Use Changes, and Tourism Urbanization: A Narrative Focused on Hotel do Garbe, Armação de Pêra, Algarve, Portugal." Land 12, no. 3 (March 13, 2023): 674. http://dx.doi.org/10.3390/land12030674.
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This article is focused on the use of photography to characterize land-cover and land-use changes in a 7.59 km2 study area centered on Hotel do Garbe, in the village of Armação de Pêra, Algarve, Portugal. Orthorectified vertical aerial, oblique aerial and ground-level photographs were the main data sources required to carry out the analysis. In a preliminary approach, a conventional research design was adopted. Based on the available orthorectified vertical aerial photographs, a sixty-year time series, with four homogeneously distributed steps (1958, 1978, 1997 and 2018), was constructed, and maps were produced to support the description of the changes that have taken place. To deepen the analysis, photographs from fourteen picture postcards were recognized as a useful source of information, and the authors of these photographs were considered “involuntary or accidental photo-geographers” whose work was relevant to feed a case study in which human geography and landscape biography sciences are the main narrative axes. The final result proved to be richer than the interpretation only based on the orthorectified vertical aerial photographs, and the importance of combining photographs taken from different points of view, with different aims and for different recipients is highlighted.
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Maksymova, Yuliia, and Oleksii Boiko. "GEODESY, CARTOGRAPHY, AND AERIAL PHOTOGRAPHY." GEODESY, CARTOGRAPHY, AND AERIAL PHOTOGRAPHY 93,2021, no. 93 (June 23, 2021): 59–71. http://dx.doi.org/10.23939/istcgcap2021.93.059.
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Purpose. The aim of the research is to develop fuzzy impact models of the natural and anthropogenic influence, which allows to integrate different physical factors, which makes it possible to bring them to a single environmental assessment system and comparison of different assessed areas. Methodology. The basis of the proposed modeling is a traditional approach on the development of such models, which includes conceptual, logical and physical modeling levels. The Unified Modeling Language (UML) is used for conceptual modeling level, which is recommended as the main modeling tool in the set of international standards in geographic information / geomatics and software that supports the interactive mode of UML diagrams creation Visio. The geospatial database and SQL-functions are implemented and the extension of the standard SQL-99 language with a new data type geometry and built-in functions which provides storage, processing and analysis of geospatial data in database management systems is used. The proposed models are realized in the environment of object-relational DBMS PostgreSQl / Postgis and geographic information system QGIS. Results. A review of the experience of using fuzzy logic to assess the state of the environment is done. Technological models for computation of indicators of administrative unit provision by social infrastructure objects, influence of greenery, industrial territories and transport on the environment are offered and realized. An example of approbation of the proposed approach based on OpenStreetMaps open data for the Popasnianskyi distinct of Luhansk region territory is given. Scientific novelty. Theoretical generalizations are made and practical results are received of resolving applied problem of the development of the fuzzy impact assessment model of various factors influence on the environment with use of GIS. Such assessment can be used at the stage of community spatial development strategies preparation to determine the most acceptable development version, as well as to unify the means of strategies implementation monitoring, organically linking local, national and global tasks. Practical significance. The application of the proposed approach of GRID modeling and fuzzy impact assessment use in assessing the quality of the environment allows to integrate different indicators, compare them, by bringing them into a single evaluation system.
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Zyhar, Andrii, Yuriy Yushchenko, and Ihor Savchyn. "GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY." GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY 97,2023, no. 97 (2023): 24–31. http://dx.doi.org/10.23939/istcgcap2023.97.024.
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Purpose. Statistical information for the period from 2016 to 2021 was used to analyze seismic activity. Objective. The aim of the study is to identify the relationship between changes in water level and local seismic activity in the region. Using HPP and Psing filtering, the hypocenters of earthquakes within a radius of 30 km from the seismic station with the NDNU index were selected, and using geographic information technology tools, the hypocenters of earthquakes were compared with the geological structure of the region. Methodology. Statistical information for the period from 2016 to 2021 was used to analyze seismic activity. Using filtering, the hypocenters of earthquakes within a radius of 30 km from the seismic station with the NDNU index were selected, and using geographic information technology tools, the hypocenters of earthquakes were compared with the geological structure of the region. Results. The studies revealed a correlation between seismic events and water level fluctuations in the reservoir. The paper also established the density of episodes concentrated in the reservoir operation area, as well as the magnitude and shallow depth, indicated the probability of activation of faults located in geological layers close to the ground surface. The stresses in the soils were assessed. Using the Coulomb-Mohr theory, the ultimate stresses leading to the destruction of structural ties were calculated approximately, and the optimal modes of operation of the reservoir were determined. Originality. The research in the article allows us to more accurately assess the effect of the stress gradient in the soils on the background seismicity in the reservoir operation area. Practical significance. The practical significance of this study is understanding the effect of the stress gradient on induction earthquakes. The described method, which is based on the principles of Coulomb's law and Mohr's theory, allows us to remotely study the behavior of the material under different loading conditions. This study and the development of a geomechanical model helps to better understand and predict earthquake behavior and determine safe loading zones. This has practical implications for the design and construction of structures, as well as for risk assessment and appropriate safety measures.
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Karpinkyi, Yurii, and Nadiia Lazorenko-Hevel. "GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY." GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY 92,2020, no. 92 (December 24, 2020): 24–36. http://dx.doi.org/10.23939/istcgcap2020.92.024.
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The article proposes a new development concept of topographic mapping in Ukraine. The goal. It is based on the implementation of a new system model that responds to the geoinformation approach to topographic mapping in the development of National Spatial Data Infrastructure (NSDI) and provides the creation of geospatial data sets in the form of databases and knowledge bases based on existing standards and specifications: series of International Standards ISO 19100 “Geographic information/Geomatics”, Open Geospatial Consortium (OGS), INSPIRE, National Standards of Ukraine (DSTU), Complex of Standards Organization of Ukraine (SOU) “Topographic database”. Methods. The basis for the research is the analysis of the possibilities of applying the theory of databases and knowledge bases International Standards and specifications. Scientific novelty and practical significance. It provides a high intellectual level of Core Reference and profile geospatial data, which is capable to provide geoinformation analysis and modeling in modern GIS. In addition, the implementation the infrastructure approach to topographic production and the creation and development of a permanent topographic monitoring system will ensure the publication of geospatial data in real time, almost simultaneously with changes in the terrain, which guarantees the maintenance of the single digital topographic basis and, accordingly, Core Reference Datasets for NSDI.
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Chen, Xiliang, Gang Li, Lan Yang, Qifan Nie, Xinyue Ye, Yanjun Liang, and Tingting Xu. "Profiling unmanned aerial vehicle photography tourists." Current Issues in Tourism 23, no. 14 (August 13, 2019): 1705–10. http://dx.doi.org/10.1080/13683500.2019.1653832.
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Warner, William S. "Benefits of small-format aerial photography." Norsk Geografisk Tidsskrift - Norwegian Journal of Geography 43, no. 1 (January 1989): 37–44. http://dx.doi.org/10.1080/00291958908552216.
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Ievsiukov, Taras, Borys Chetverikov, Іvan Kovalchuk, Іvan Openko, Оleksandr Shevchenko, Yanina Stepchuk, and Оleksandr Makarov. "GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY." GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY 94,2021, no. 94 (2021): 44–53. http://dx.doi.org/10.23939/istcgcap2021.94.044.
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Elaboration of the method of creating a web-GIS of Polish burials at the Baikove Cemetery in Kyiv. Achieving this goal involves the following tasks: to develop the structure of the geographic information system, its framework and to fill the file database. For realization of the set tasks the technological scheme consisting of 12 stages of work is offered. The first stage involved the collection of cartographic and descriptive data on the territory of the object of study, as well as the search for possible registers of Polish burials within the object under study. In the second stage, field surveys were performed to determine the coordinates of each grave of the Polish burials at the Baikove Cemetery using a GIS tablet with an RTK antenna LT700H (accuracy up to 0.30 m). The total number of coordinated points was 565, which were concentrated in 7 sections of the cemetery. The third stage included the coordination of reference points and the binding of this support in the GIS MapInfo environment of the fragment of the topographic plan of Kyiv on a scale of 1: 2000 to the territory of the Baikove Cemetery. There were a total of 11 landmarks. The maximum binding error is 0.2 m. In the fourth stage, all point objects were displayed according to their coordinates on the basis of the map and the corresponding symbols were selected. The next step was to develop and populate a relational database for point objects. The database contained the following columns: grave number, name and surname of the buried person, grave coordinates and hyperlinks to burial information in the file database. Next, all map layers were exported to html format, and the point object layer was exported to kml format using a universal translator, which allowed to view burial data in GoogleEarth. At the eighth stage of the technological scheme the structure of layouts of each html-page of the created online GIS was developed. All map data had hyperlinks to the selected AOI objects. In the case of the Baikove Cemetery scheme, plots with Polish burials were marked. Clicking on them opened a topographic plan with marked point objects of burials. In turn, when you click on them, information about the burial appeared from the file database. At the tenth stage, 5 sheets of topographic plans with burials were generated. One sheet of scale 1: 2000 and four sheets of scale 1: 500, for better "spreading" and initialization of burials. The eleventh stage is devoted to the creation and filling of a file database on Polish burials. This database contained the following structure: photo of the burial, coordinates, surname and name, years of life, additional photographs (if available), sex of the buried person, interpreted inscription on the tombstone, as well as, if possible, detailed information and belonging of the buried person to a certain profession, its outstanding achievements and accomplishments. At the last stage, the hyperlinks of the transition between the pages were configured and the system was tested. The scientific novelty lies in the development of the concept of joint use of various applications of geoinformation and non-geoinformation purposes. The technological scheme of creation of WEB-GIS of Polish burials of the Baikove Cemetery in Kyiv is offered. Implemented geographic information system is designed for inventory of burials, analysis of the condition of tombstones and their spatial location in the cemetery. In addition, the created GIS can be used for tourism purposes and in the study of historical figures of Polish origin.
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Grama, Vasile, and Andrei Iacovlev. "GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY." GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY 92,2020, no. 92 (December 24, 2020): 37–44. http://dx.doi.org/10.23939/istcgcap2020.92.037.
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Abstract. The goal of this research is the assessing of the current conditions of water protection strips in their role as an effective buffer that prevents water bodies from deteriorating due to soil erosion and pollution. In base of this study the action plan is developing to improve the conditions of the water protection strips for the lakes. The approach focused on the idea of an empirical study (based on observations and field measurements) on the environmental quality. Is proposed an integral analysis of the territory of the protection strips, the processes and phenomena taking place within them, in order to obtain a clear picture of the state of the environment. In the scope to administrate, and to assure the visualization and transparency of this study the project blog on the "blogspot.com" platform was created with properly configured geographic interest patterns. Cartographic data were published on Google Maps and integrated in blog. Thus, by accessing the blog, the views of the lake, the points of interest, with the necessary attributes is accessing with the possibility for the spatial analyses. The preliminary results show the positive effects and high interest of the stakeholders concerning of WebGIS technology for the assessment of environmental conditions of water protection strips along the Costesti- Stinca reservoirs. Scientific novelty consists in the optimal combination of the blogspot application on the google maps by integration of spatial data with different software (QGIS, Mapinfo, ArcGIS) and geospatial database - PostGIS. Easy to publish, to visualization and monitoring. The practical significance is expressed by objective reflection of a type of activity that takes place in space, including environmental phenomena, vizualisation and monitoring of them.
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Nebaba, Stepan G., and Alena A. Zakharova. "Algorithms for obtaining, complexing and processing weakly formalized heterogeneous aerial photography data." Journal Of Applied Informatics 19, no. 2 (April 29, 2024): 67–82. http://dx.doi.org/10.37791/2687-0649-2024-19-2-67-82.
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In the paper requirements are formulated for representation models, algorithms for obtaining, complexing and processing weakly formalized heterogeneous data to build a spatial model of the research object. An approach to aggregation of multispectral data has been developed using the example task of combining visual data from aerial photography and geographic coordinates of objects obtained using unmanned aerial vehicles. An algorithm for combining visual data is proposed based on the recurrent combining of aerial photography images, which includes key point’s detection in the images and building a RANSAC regression model based on these points. An algorithm for comparing geographic coordinates with points of the combined image is also proposed. The algorithm is based on the idea of equivalent transformations over visual data and geographic coordinates of objects. The proposed algorithms are implemented as a software tool, it is tested on several sets of aerial photography data. Prospects for the development of the proposed approach and the shortcomings of its algorithms that need to be eliminated are identified. It has been established that further optimization of memory use when combining aerial photography images and further research in the direction of compensating for perspective distortion are necessary. The applicability of the proposed approach is shown in the problems of obtaining, complexing, processing and visualizing weakly formalized multispectral data in the field of aerial photography of images of various ranges (thermal imaging, optical, etc.), as well as in other areas of data processing and analysis, such as detection and semantic segmentation objects in aerial photography images. Additional spatial information can improve the accuracy of classification and segmentation of objects in images.
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Ndalila, Mercy N., Grant J. Williamson, and David M. J. S. Bowman. "Geographic Patterns of Fire Severity Following an Extreme Eucalyptus Forest Fire in Southern Australia: 2013 Forcett-Dunalley Fire." Fire 1, no. 3 (October 22, 2018): 40. http://dx.doi.org/10.3390/fire1030040.
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Fire severity is an important characteristic of fire regimes; however, global assessments of fire regimes typically focus more on fire frequency and burnt area. Our objective in this case study is to use multiple lines of evidence to understand fire severity and intensity patterns and their environmental correlates in the extreme 2013 Forcett-Dunalley fire in southeast Tasmania, Australia. We use maximum likelihood classification of aerial photography, and fire behavior equations, to report on fire severity and intensity patterns, and compare the performance of multiple thresholds of the normalised burn ratio (dNBR) and normalized difference vegetation index (dNDVI) (from pre- and post-fire Landsat 7 images) against classified aerial photography. We investigate how vegetation, topography, and fire weather, and therefore intensity, influenced fire severity patterns. According to the aerial photographic classification, the fire burnt 25,950 ha of which 5% burnt at low severities, 17% at medium severity, 32% at high severity, 23% at very high severities, while 22% contained unburnt patches. Generalized linear modelling revealed that fire severity was strongly influenced by slope angle, aspect, and interactions between vegetation type and fire weather (FFDI) ranging from moderate (12) to catastrophic (>90). Extreme fire weather, which occurred in 2% of the total fire duration of the fire (16 days), caused the fire to burn nearly half (46%) of the total area of the fireground and resulted in modelled extreme fireline intensities among all vegetation types, including an inferred peak of 68,000 kW·m−1 in dry forest. The best satellite-based severity map was the site-specific dNBR (45% congruence with aerial photography) showing dNBR potential in Eucalyptus forests, but the reliability of this approach must be assessed using aerial photography, and/or ground assessment.
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Kin, Danylo, and Yurii Karpinskyi. "GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY." GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY 95,2022, no. 95 (June 28, 2022): 103–12. http://dx.doi.org/10.23939/istcgcap2022.95.103.
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The aim of this work – research of topological inconsistencies during adjustment and junction of adjacent map sheets of digital topographic maps of scale 1:50000 with the use of rigorous analytical geodetic methods on the reference ellipsoid in the geoinformation environment. The research analyzes the phenomenon of topological inconsistencies of frames of adjacent digital topographic maps of 1:50000 scale within the zones of Gauss-Krueger projections and the feasibility of transition to rigorous analytical geodetic methods in the geoinformation environment during the creation of the topographic database “The Main state topographic map” by determining the differences between the vertices of the frames of digital topographic maps at a scale of 1: 50000 at the boundaries of the projection zones. This phenomenon was discovered during work at the state enterprise “Research Institute of Geodesy and Cartography”. The dependences are shown and analyzed, which show the changes in the distances between the vertices of the frames of adjacent map sheets of scale 1: 50000 in longitude and latitude. These values range from 1 mm to 8 mm, which leads to topological inconsistencies in the form of gaps and overlaps of adjacent map sheets. These gaps and overlaps complicate the process of adjustment of map sheets and make it impossible to automate the process of the junction of features into the topographic database. The scientific novelty of the research is to justify the use of rigorous analytical geodetic methods and tools instead of analog cartometric and standard methods of instrumental GIS; the use of a reference ellipsoid, not just cartographic projections, a spheroid or a sphere. The practical significance of research is the use of rigorous analytical geodetic methods that significantly minimize the values of gaps and overlaps, as the establishment of tolerances for these values does not automate the process of correct adjustment and junction of map sheets. The performed research can be used to create the topographic database “The Basic topographic map scale 1: 10000”, during the creation and updating of geospatial data in the geoinformation environment and the implementation of geodetic methods to determine the cartometric characteristics of features using GIS. Given the results of research, we can conclude that the present stage of application of geographic information systems in topographic and geodetic activities requires increasing the level of data topology and accuracy of all cartometric methods, which leads to the transition to extremely rigorous analytical geodetic methods directly on the reference ellipsoid.
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Lysandrou, Vasiliki, and Athos Agapiou. "The Role of Archival Aerial Photography in Shaping Our Understanding of the Funerary Landscape of Hellenistic and Roman Cyprus." Open Archaeology 6, no. 1 (December 31, 2020): 417–33. http://dx.doi.org/10.1515/opar-2020-0117.
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AbstractThis study deals with the investigation of the Eastern necropolis of Nea Paphos in western Cyprus, employing archival and recent aerial photographs for the identification of surface/near-surface ancient architectural remains. The analysis of the primary archival aerial photograph employed for this study reveals the archaeological visibility of the site as it had been captured approximately 15 years before its rescue excavation in the 1980s. The outcomes from the enhancement and interpretation of the archival aerial photograph supplement known archaeological information of the area and elucidate the understanding of the spatial distribution of the tombs as well as the geographic extent of the necropolis.
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Schrank, Zach. "Visualizing the Anthropocene from Above." Contexts 21, no. 2 (May 2022): 44–51. http://dx.doi.org/10.1177/15365042221107661.
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We created the Indiana Anthropocene project not only because we reside in this state, but also in order to demonstrate the scope and process of the new epoch in a familiar and defined location. This aerial photography project captures features of the Anthropocene within a regional bounded space, thus collapsing the global into the local. In other words, it provides a visual conceptualization of the geography we live in as a microcosm of the global stage. Furthermore, aerial drone photographs provide vantage points and perspectives of our world that can enhance our perception of society. It allows us to see and connect large-scale processes that otherwise remain hidden from the ground. Images from the sky piece together a complex visual socio-ecological story of how we interact with the environment on immense landscapes.
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Galayda, Andrii, Borys Chetverikov, and Ihor Kolb. "GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY." GEODESY, CARTOGRAPHY AND AERIAL PHOTOGRAPHY 95,2022, no. 95 (June 28, 2022): 65–76. http://dx.doi.org/10.23939/istcgcap2022.95.065.
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The aim of the work is to propose a method of creating a geographic information online resource for the management of Lisovohrynivetska UTC. To implement the tasks, a technological scheme was proposed, which consisted of 9 stages of work. The first stage involved the collection and analysis of disparate data in both vector and raster formats on the territory of the Lisovohrenivetska united territorial community. In the second stage, with the help of Global Mapper software, all vector data files in *.dxf and *.dmf formats, which were previously available, were converted to *.shp format for further processing in ArcGIS software. As a result of the conversion, graphic and attributive data were obtained in the required format and according to the layers they contain, the geodatabase with symbols according to the classifier was edited to create 1: 2000 scale plans. The next step was to unify the database of convertible files, as vector data was created with different construction of attribute tables. In addition, there is a need to enter vector data into the edited geospatial database. To do this, a ArcPy script was written that rearranges attribute tables and enters data into a geodatabase. Adjusted and populated the attribute database of vector objects for those columns where there was no information. The penultimate step was to develop the structure of the geoportal on the basis of ArcGIS-online to download the geodatabase to Lisovohrynivetska UTC on the server, to enable their external use with a unique login and password. The last step, after creating the structure of the geoportal, was to upload vector and raster geodata prepared by ArcGIS to the geoportal. As a result of the realization of the set purpose the technique of creating the geoinformation online resource for the management of the united territorial community is offered and described. During the implementation of the method the data of 24 disparate vector layers for the Lisogrynivtska community of Khmelnytsky region were processed and converted. Raster cartographic materials for UTC were collected and processed. The geodatabase according to the classifier for scale 1: 2000 is created. The structure of the geoportal based on the ArcGIS-online kernel with a connected map-base based on the online resource GoogleMaps, where all processed materials are downloaded, has been developed. The scientific novelty is to develop the concept of accumulation of heterogeneous vector and raster geospatial data in one geodatabase, by converting them into a specific format. Additional modules have been written in ArcPy to unify the database structure. Implemented geoinformation system is located on the geoportal and is designed for management decisions of community leaders. In addition, the created GIS can be used for land management and surveying work on community sites.
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Zhongyu, Kui. "18-23 MSP MULTI-SPECTRAL AERIAL PHOTOGRAPHY." National Remote Sensing Bulletin, no. 4 (1991): 291–95. http://dx.doi.org/10.11834/jrs.1991047.
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Yamamoto, Hajime. "Aerial Surveys and Geographic Information in Modern China." Abstracts of the ICA 1 (July 15, 2019): 1–2. http://dx.doi.org/10.5194/ica-abs-1-414-2019.
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<p><strong>Abstract.</strong> Today when online satellite images are just a click away, access to geographic information showing the latest images of the globe has dramatically expanded, and historico-geographic research based on such information is flourishing. However, in the study of Chinese history, historical research employing GIS or similar technologies is still in its infancy, since “historical” geographic information with a high degree of precision are lacking. From within the ambit of Chinese geographic information, this report specifically highlights aerial surveys effected during the Republic of China era. To start, we review the history of domestic aerial surveys during R. O. C. period. Then, focusing on Nanjing as an example, we proceed to introduce maps that were actually created based on aerial surveys.</p><p>Chinese aerial surveys date back to around 1930. At the Nationalist Party’s General Assembly in 1929, partisans proposed for the need for aerial surveys. In 1930, the “Aerial Photography and Survey Research Team” was formed within the General Land Survey Department at General Staff Headquarters (National Army of the Republic of China). Consequently, foreign technicians were invited to provide relevant education/training. In June 1931, China’s pioneer initiative in aerial photography took place in Zhejiang province. The aim of aerial surveys in those early days was to create maps for military purposes. Between 1932 and 1939, topographic maps of fortifications located in areas such as the Jiangnan district were prepared. Further, starting from around the same period until the Sino-Japanese War, land registry maps based on aerial surveys were also produced. After the Sino-Japanese War ended, the above-mentioned directorate handed over responsibility for aerial surveys to the Naval General Staff. However, in 1949 the Chinese Communist Party confiscated the maps theretofore produced.</p><p>Although the aerial photographs and the geographic information produced therefrom during the R. O. C. era were seized by the People’s Republic of China, in actuality, some had previously been transferred to Taiwan. The topographic maps of the Nanjing metropolitan area (一萬分一南京城廂附近圖), based on aerial surveys and drawn in 1932, are currently archived at Academia Historica in Taipei. Comprising a total of 16 sheets, these maps were drawn on a scale of 1:10,000 by the General Land Survey Department.</p><p>Similarly, other maps (各省分幅地形圖) produced by the General Land Survey Department, comprising a total of 56 sheets and partly detailing Nanjing, are now in the possession of Academia Sinica in Taipei. There was no information about photographing or making in these maps. But almost the same maps were archived at Library of Congress in Washington D. C. According to those maps at LC, based on aerial photographs taken and surveys conducted in 1933, these topographic maps (1:10,000 scale) were completed in 1936.</p><p>The examples introduced above are topographic maps based on aerial photography. However, starting in 1937, land registry maps were also created. Detailing the outskirts of Nanjing (1:1,000 scale) and comprising a total of 121 sheets, they are now archived at Academia Historica. While the land registry maps were produced in 1937, supplementary surveys were effected following the Sino-Japanese War in 1947.</p><p>Since the geographic information based on aerial surveys during the R. O. C. era in China were precise, they can serve as a source of manifold information. This report only delved into information developed by the Government of the R. O. C., but it is becoming evident that U. S. Armed Forces and Japan also produced geographic information of their own based on aerial surveys. If the comprehensive panorama captured by all three protagonists can be illuminated, further advances in Chinese historico-geographic studies employing geographic information will be forthcoming.</p>
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Gonçalves, J. A. "AUTOMATIC ORIENTATION AND MOSAICKING OF ARCHIVED AERIAL PHOTOGRAPHY USING STRUCTURE FROM MOTION." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-3/W4 (March 17, 2016): 123–26. http://dx.doi.org/10.5194/isprs-archives-xl-3-w4-123-2016.
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Aerial photography has been acquired regularly for topographic mapping since the decade of 1930. In Portugal there are several archives of aerial photos in national mapping institutes, as well as in local authorities, containing a total of nearly one hundred thousand photographs, mainly from the 1940s, 1950s and some from 1930s. These data sets provide important information about the evolution of the territory, for environment and agricultural studies, land planning, and many other examples. There is an interest in making these aerial coverages available in the form of orthorectified mosaics for integration in a GIS. <br><br> The orthorectification of old photographs may pose several difficulties. Required data about the camera and lens system used, such as the focal distance, fiducial marks coordinates or distortion parameters may not be available, making it difficult to process these data in conventional photogrammetric software. <br><br> This paper describes an essentially automatic methodology for orientation, orthorectification and mosaic composition of blocks of old aerial photographs, using Agisoft Photoscan structure from motion software. The operation sequence is similar to the processing of UAV imagery. The method was applied to photographs from 1947 and 1958, provided by the Portuguese Army Geographic Institute. The orientation was done with GCPs collected from recent orthophototos and topographic maps. This may be a difficult task, especially in urban areas that went through many changes. Residuals were in general below 1 meter. The agreement of the orthomosaics with recent orthophotos and GIS vector data was in general very good. The process is relatively fast and automatic, and can be considered in the processing of full coverages of old aerial photographs.
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Keysar, Hagit. "A spatial testimony: The politics of do-it-yourself aerial photography in East Jerusalem." Environment and Planning D: Society and Space 37, no. 3 (December 28, 2018): 523–41. http://dx.doi.org/10.1177/0263775818820326.
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In this paper, I examine the kind of testimony enabled by do-it-yourself aerial photography with kites or balloons in situations of political and spatial conflict, and how this plays on the surface of proliferating uses of geospatial technologies in a human rights context. The case study presented here concerns the use of do-it-yourself aerial photography in the context of discriminatory urban planning policies and practices against the Palestinian population of East Jerusalem. Its analysis shows that the political potentials of do-it-yourself aerial photography go further than just enabling the independent production of high-resolution aerial evidence in near real-time settings. It brings forth a distinctive kind of testimony, which I term a “spatial testimony,” that pushes against a certain threshold of participation in human rights truth production and sheds light on the political role embodiment may play in such processes. The “spatial testimony” denotes not only the visual image or the speech act related to the testimony but also the whole process of experimentation with a self-built instrument that unsettles and reconfigures the political space of relations between human rights, human bodies, and technoscientific objects.
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Mohamed Ali, Abbas Sayed Ahmed, and Ahmed Abu Al Qasim Al Hassan. "Remote Sensing and Its Uses in Archeology." Journal of Arts and Social Sciences [JASS] 2, no. 1 (January 1, 2011): 5. http://dx.doi.org/10.24200/jass.vol2iss1pp5-25.
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Aerial photography, remote sensing technique has been used as a tool for acquisition of archaeological information for several decades. At the turn of the twentieth century, archaeologists realized that valuable archaeological data could be extracted from aerial photos, thus it has been developed into a systematic discipline known as aerial archaeology. Though aerial photography has a long history of use, Satellite remote sensing is a recent discipline applied in detection, mapping and analysis of archaeological matter, providing that the spatial resolution of the sensor is adequate to detect the features. Both aerial photography and satellite imagery have advantages and limitations with regard to archaeological applications. In the last few years, combination of the two was found to be ideal for archaeological remote sensing applications. Remote sensing has increased in importance to archaeology, as being an important close integrator with Geographic Information Systems. Remote sensing and its kindred tool of GIS have become central elements of modern spatial information and analysis system in archaeology.
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Mohamed Ali, Abbas Sayed Ahmed, and Ahmed Abu Al Qasim Al Hassan. "Remote Sensing and Its Uses in Archeology." Journal of Arts and Social Sciences [JASS] 2, no. 1 (January 1, 2011): 5–25. http://dx.doi.org/10.53542/jass.v2i1.1032.
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Aerial photography, remote sensing technique has been used as a tool for acquisition of archaeological information for several decades. At the turn of the twentieth century, archaeologists realized that valuable archaeological data could be extracted from aerial photos, thus it has been developed into a systematic discipline known as aerial archaeology. Though aerial photography has a long history of use, Satellite remote sensing is a recent discipline applied in detection, mapping and analysis of archaeological matter, providing that the spatial resolution of the sensor is adequate to detect the features. Both aerial photography and satellite imagery have advantages and limitations with regard to archaeological applications. In the last few years, combination of the two was found to be ideal for archaeological remote sensing applications. Remote sensing has increased in importance to archaeology, as being an important close integrator with Geographic Information Systems. Remote sensing and its kindred tool of GIS have become central elements of modern spatial information and analysis system in archaeology.
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Booth, D. Terrance, and Samuel E. Cox. "Very Large Scale Aerial Photography for Rangeland Monitoring." Geocarto International 21, no. 3 (September 2006): 27–34. http://dx.doi.org/10.1080/10106040608542390.
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Gonçalves, J. A. "AUTOMATIC ORIENTATION AND MOSAICKING OF ARCHIVED AERIAL PHOTOGRAPHY USING STRUCTURE FROM MOTION." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-3/W4 (March 17, 2016): 123–26. http://dx.doi.org/10.5194/isprsarchives-xl-3-w4-123-2016.
Full textAbstract:
Aerial photography has been acquired regularly for topographic mapping since the decade of 1930. In Portugal there are several archives of aerial photos in national mapping institutes, as well as in local authorities, containing a total of nearly one hundred thousand photographs, mainly from the 1940s, 1950s and some from 1930s. These data sets provide important information about the evolution of the territory, for environment and agricultural studies, land planning, and many other examples. There is an interest in making these aerial coverages available in the form of orthorectified mosaics for integration in a GIS. <br><br> The orthorectification of old photographs may pose several difficulties. Required data about the camera and lens system used, such as the focal distance, fiducial marks coordinates or distortion parameters may not be available, making it difficult to process these data in conventional photogrammetric software. <br><br> This paper describes an essentially automatic methodology for orientation, orthorectification and mosaic composition of blocks of old aerial photographs, using Agisoft Photoscan structure from motion software. The operation sequence is similar to the processing of UAV imagery. The method was applied to photographs from 1947 and 1958, provided by the Portuguese Army Geographic Institute. The orientation was done with GCPs collected from recent orthophototos and topographic maps. This may be a difficult task, especially in urban areas that went through many changes. Residuals were in general below 1 meter. The agreement of the orthomosaics with recent orthophotos and GIS vector data was in general very good. The process is relatively fast and automatic, and can be considered in the processing of full coverages of old aerial photographs.
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Kurakina, N. I., R. A. Myshko, P. T. Prokhozhaev, and K. D. Dmitrienko. "Analysis of Aerial Photography Data Using GIS." LETI Transactions on Electrical Engineering & Computer Science 17, no. 3 (2024): 36–43. http://dx.doi.org/10.32603/2071-8985-2024-17-3-36-43.
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The article considers an approach to the construction of complex distributed, implemented on the platforms of fog and edge computing, cyber-physical systems with a high level of architectural dynamics. The article discusses the issues of processing and analyzing images obtained from unmanned aerial vehicles. Orthophotomap and digital terrain model constructing model has been developed and implemented using data received from «Geoscan» LLC. As a result, 7 raster TIFF format orthophoto maps were created with accuracy of up to 0.025 meters. A geodatabase was built in the geographic information system into which the resulting orthophotomaps were imported. Based on the orthophotomaps, a raster mosaic was created, background and the color balance were adjusted. The resulting terrain image was analyzed, a slopes map, surface aspect, hillshade and a realistic image of the terrain were created. Aerial photography data analyzing algorithm, can be applied for processing any images obtained from unmanned aerial vehicles. The results obtained can be used for survey work, land management, architectural and construction design, environmental monitoring, and agriculture.
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Hinchcliffe, Tanis. "Aerial Photography and the Postwar Urban Planner in London." London Journal 35, no. 3 (November 2010): 277–88. http://dx.doi.org/10.1179/174963210x12814015170232.
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Denevan, William M. "The 1931 Shippee-Johnson Aerial Photography Expedition to Peru." Geographical Review 83, no. 3 (July 1993): 238. http://dx.doi.org/10.2307/215727.
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Moore, E. "Water Management in Early Cambodia: Evidence from Aerial Photography." Geographical Journal 155, no. 2 (July 1989): 204. http://dx.doi.org/10.2307/635062.
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Pilicheva, M., L. Maslii, and T. Anopriienko. "TECHNOLOGY OF GEODESIC WORKS IN THE INVENTORY OF GREEN SPACES USING UNMANNED AIRCRAFT." Municipal economy of cities 3, no. 170 (June 24, 2022): 263–70. http://dx.doi.org/10.33042/2522-1809-2022-3-170-263-270.
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The article is devoted to the study of the technology of inventory of green areas with the use of the latest technologies: unmanned aircraft and satellite navigation systems. The topic of the article is relevant, because reliable and up-to-date information on the quantitative and qualitative state of green spaces of settlements is obtained during their inventory and arrangement. As a result of conducting an inventory for each green economy object, a passport of the green economy improvement object is drawn up. The following documents are attached to the passport: an inventory plan on a given scale and a working diary of accounting for greenery. One of the links in the inventory of green spaces of the settlement is sub-field survey, which is currently performed using unmanned aerial vehicles and satellite technologies and in turn consists of topographic and geodetic and aerial photography, and is divided into the following stages: information collection; preparatory work; chamber work. At the stage of collecting information on the object of work, the available urban, land management, geodetic and cartographic materials are analyzed. The second stage – preparatory work, consists of field surveying and aerial photography. Field geodetic works include reconnaissance of the area and the development of plan-height substantiation of the aerial survey area. Field aerial photography consists of creating a flight project, pre-flight training of a quadcopter and direct aerial photography. In-house works are the third final stage, which consists of: processing of aerial photographs; creation of a polygonal terrain model; creation of orthophoto in scale 1: 500; creation of a topographic plan in the Digitals software package; reconnaissance of the area to clarify the spatial and attributive data on greenery; creation of the adjusted topographic plan of inventory of green spaces. It is also recommended to make adjustments to the obtained topographic plan, during which the position of trees in places where a large error was detected and outlines were formed was measured by linear notches with reference to rigid contours. At the same time it is necessary to clarify the species of trees according to the symbols. The digital information obtained in this way about green plantations can be used to calculate the cost of work on the development of the passport of the facility and inventory plan for a given area or create and develop geographic information portals of green areas of individual territories or settlements.
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He, Yuanrong, Weiwei Ma, Zelong Ma, Wenjie Fu, Chihcheng Chen, Cheng-Fu Yang, and Zhen Liu. "Using Unmanned Aerial Vehicle Remote Sensing and a Monitoring Information System to Enhance the Management of Unauthorized Structures." Applied Sciences 9, no. 22 (November 18, 2019): 4954. http://dx.doi.org/10.3390/app9224954.
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In this research, we investigated using unmanned aerial vehicle (UAV) photographic technology to prevent the further expansion of unauthorized construction and thereby reduce postdisaster losses. First, UAV dynamic aerial photography was used to obtain dynamic digital surface model (DSM) data and elevation changes of 2–8 m as the initial sieve target. Then, two periods of dynamic orthophoto images were superimposed for human–computer interaction interpretation, so we could quickly distinguish buildings undergoing expansion, new construction, or demolition. At the same time, mobile geographic information system (GIS) software was used to survey the field, and the information gathered was developed to support unauthorized construction detection. Finally, aerial images, interpretation results, and ground survey information were integrated and released on WebGIS to build a regulatory platform that can achieve accurate management and effectively prevent violations.
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Setiawan, Sony, Asep Adang Supriyadi, Pujo Widodo, and Djoko Andreas Navalino. "Aerial photo database model of Indonesia's national territory in a Geospatial intelligence perspective." Journal of Applied and Natural Science 16, no. 2 (June 19, 2024): 637–45. http://dx.doi.org/10.31018/jans.v16i2.5468.
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The National Aerial Photo Database is a collection of aerial photographs obtained through aerial photography using specific cameras or sensors with manned or unmanned aerial vehicles across the territory of the Republic of Indonesia. These photographs are stored in a computer system for easy access, management, and updating. No national aerial photo database system currently meets the need for accurate and complete aerial photos and other geospatial information to support decision-making. The present study aimed to develop a model for the National Aerial Photo Database from a geospatial intelligence perspective based on statutory regulations. The collection of aerial photo data in a centralized database commenced with scanning negative film based on location and flight paths and copying all digital data. The original negative films were scanned at 20 μm resolution in a Vexcel Ultrascan 5000 photogrammetry scanner. The resulting size of one scanned photo is 140 Mb to 160 Mb. This research adopts a qualitative research method with a case study approach. This research involved the electronic implementation of geospatial data and information by utilizing Geographic Information System (GIS) software, image and geospatial information data management, and the Scrum framework. This research concluded that geospatial intelligence efforts can better understand activity patterns, infrastructure development, and potential threats in the national territory. The insights gained from the aerial photo database aid in identifying trends, detecting anomalies, and assessing risks, all of which are critical for better decision-making in national security.
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Werth, Lee F., and Edgar A. Work. "Applications of large‐scale aerial photography for rangeland monitoring." Geocarto International 7, no. 1 (March 1992): 11–18. http://dx.doi.org/10.1080/10106049209354347.
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Triyono, T. "Tinjauan Geografis "Litoralisasi" di Kawasan Pesisir Selatan Yogyakarta." Forum Geografi 23, no. 1 (July 20, 2009): 1. http://dx.doi.org/10.23917/forgeo.v23i1.4994.
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"Littoralization" can be geographically studied based on geomorphological approach and landuse system. The method of coastal geography provides useful data of geomorphology and landuse system. This research was conducted in the coastal area of south of Yogyakarta. To process spatial data was used Geographic Information System (GIS) methods (i.e. Aerial photography, satellite imagery, and field observation results). The results showed that the research area has a volcanic sandy coastal typology with flat to sloping topography. Further, this typology is divided into three units of typology, the active beach ridge and sand dunes, non-active beach ridge, and the foot hills. Development of the settlements tends toward the sea due to economic dependence on beach tourism.
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Ridefelt, Hanna, Jan Boelhouwers, and Trond Eiken. "Measurement of solifluction rates using multi-temporal aerial photography." Earth Surface Processes and Landforms 34, no. 5 (April 2009): 725–37. http://dx.doi.org/10.1002/esp.1773.
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Rasmussen, L. A., and R. M. Krimmel. "Using Vertical Aerial Photography to Estimate Mass Balance at a Point." Geografiska Annaler, Series A: Physical Geography 81, no. 4 (December 1999): 725–33. http://dx.doi.org/10.1111/j.0435-3676.1999.00100.x.
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Ambrosini, Ilaria, Lodovico Gherardi, Maria Laura Viti, Giorgio Maresi, and Tullio Turchetti. "Monitoring diseases of chestnut stands by small format aerial photography." Geocarto International 12, no. 3 (September 1997): 41–46. http://dx.doi.org/10.1080/10106049709354595.
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McAuliffe, Carol Patterson. "Geoliteracy through Aerial Photography: Collaborating with K-12 Educators to Teach the National Geography Standards." Journal of Map & Geography Libraries 9, no. 3 (September 2013): 239–58. http://dx.doi.org/10.1080/15420353.2013.817368.
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Anderson, G. L., J. H. Everitt, D. E. Escobar, N. R. Spencer, and R. J. Andrascik. "Mapping leafy spurge (euphorbia esula) infestations using aerial photography and geographic information systems." Geocarto International 11, no. 1 (March 1996): 81–89. http://dx.doi.org/10.1080/10106049609354526.
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Greenfield, L. G., and K. J. Wilson. "Adélie penguin colony estimations from aerial photography and ground counts." Polar Record 27, no. 161 (April 1, 1991): 129–30. http://dx.doi.org/10.1017/s0032247400012262.
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Crutchley, Simon. "The Landscape of Salisbury Plain, as Revealed by Aerial Photography." Landscapes 2, no. 2 (October 2001): 46–64. http://dx.doi.org/10.1179/lan.2001.2.2.46.
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Chymyrov, A. U., A. K. Bekturov, N. Y. Ismailov, and T. K. Urmambetova. "AGRICULTURAL CROP MONITORING BY USING SATELLITE IMAGERY AND AERIAL PHOTOGRAPHY." Heralds of KSUCTA, №1, 2022, no. 1-2022 (March 14, 2022): 43–52. http://dx.doi.org/10.35803/1694-5298.2022.1.43-52.
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The relevance of this article is adaptation and improvement of the modern approach to identifying and monitoring agricultural crops in Kyrgyzstan. The purpose of this work is to apply geographic information systems and remotely sensed data by using modern methods of monitoring agricultural land based on vegetation indices for the effective management of the country's agriculture. The results of such work makes possible to significantly reduce the implementation of ground-based experimental work and quickly carry out mapping of agricultural land and other land areas.
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Apriansyah, Muh, and Harintaka Harintaka. "Comparative Analysis of the Semantic Conditions of LoD3 3D Building Model Based on Aerial Photography and Terrestrial Photogrammetry." Journal of Applied Geospatial Information 7, no. 2 (October 26, 2023): 927–31. http://dx.doi.org/10.30871/jagi.v7i2.6634.
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3D modeling of buildings is an important method in mapping and modeling the built environment. In this study, we analyzed the differences between the semantic state of actual buildings and 3D models of LoD3 buildings generated using aerial and terrestrial photogrammetric methods. We also evaluated the accuracy of the visual representation as well as the suitability of the building geometry and texture. Our method involves collecting aerial and terrestrial photographic data and processing it using SFM (structure from motion) technology. The photogrammetric data was then processed using image matching algorithms and 3D reconstruction techniques to generate 3D models of LoD3 buildings. The actual semantic state of the building was identified through field surveys and reference data collection. The 3D building model was successfully modeled from 1201 photos and 19 ground control points. The results of the evaluation of the geometry accuracy test, dimensions and semantic completeness of the 3D model, the use of aerial photographs and terrestrial photogrammetry in LoD3 3D modeling are assessed from the results of the automatic 3D modeling process using SfM (Structure from Motion) technology that produces 3D building models in Level of Detail (LoD) 3 with Root Mean Square Error values <0.5 meters and has semantic completeness of the building in accordance with the original object based on the City Geography Markup Language (CityGML) standard. The facade formed from the modeling almost follows the original model such as doors, windows, hallways, etc.
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Mishin, I. V., and V. N. Ovechkin. "Simulation of Photometric Conditions by Aerial and Space Photography of the Earth's Surface." Mapping Sciences and Remote Sensing 40, no. 4 (December 2003): 268–78. http://dx.doi.org/10.2747/0749-3878.40.4.268.
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Trofimets, Elena, Valeria Kochina, Sergey Zhebo, Alexander Chashin, and Valery Trofimets. "Processing of aerial photographs in geoinformation systems for constructing models of possible flooding zones in a flood-prone period." Journal of Physics: Conference Series 2373, no. 6 (December 1, 2022): 062023. http://dx.doi.org/10.1088/1742-6596/2373/6/062023.
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Abstract The natural and geological conditions of the Khabarovsk Territory determine the specificity of any region, characterized by the annual occurrence of spring mash phenomena, their gradual transition to the summer-autumn flood-hazardous period and the departure into winter with a high water level. Forecasting the scale of possible flooding of territories is the basis for early response of the forces and means of the Unified State System for the Prevention and Response of Emergency Situations (RSChS) The paper discusses the professional experience of specialists from the Crisis Management Center of the Main Directorate of the EMERCOM of Russia for the Khabarovsk Territory in preparing models of possible flooding of settlements applying the QGIS geographic information system during the flood-prone period of 2021 in the Khabarovsk Territory. The authors identify peculiarities of the unmanned aerial vehicles used to predict areas of possible flooding such as the need for early aerial photography of human settlements; dependence of the quality of orthophotomaps on the experience of specialists performing aerial photography; variability of coastline relief; dependence on weather conditions; short period, favorable for aerial photography; inaccessibility of settlements; location of settlements in the border area. The matching of models obtained with the help of QGIS with the actual situation developed during the 2021 flood crest was identified. Also, some peculiarities and disadvantages were defined despite the positive experience of forecasting by modeling flood zones (flooding).
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Gonçalves, J. A., N. Jordão, and A. Pinhal. "ORIENTATION OF UAV IMAGE BLOCKS BY SURFACE MATCHING." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W13 (June 4, 2019): 317–21. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w13-317-2019.
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<p><strong>Abstract.</strong> Topographic maps are produced in Portugal by the Army Geospatial Data Centre, based on a geographical database collected from aerial photography in resolutions from 0.30 to 0.50&thinsp;m. Each map sheet is revised with an update interval of 10 years or more. Many changes, such as new roads or power lines, would be possible to update with much higher frequency using UAV imagery. Although the nominal scale of the published paper map sheets is 1&thinsp;:&thinsp;25,000, the actual positional accuracy requirement is of 1 meter, which is compatible with larger scales. Exterior orientation parameters obtained by UAV navigation equipment does not have enough accuracy for that. This paper deals with a method to automatically improve the UAV exterior orientation, intended to be compatible with the positional accuracy standards of the geographic database. The method is based on matching a point cloud derived from UAV imagery, without GCPs, with a reference DSM obtained from conventional aerial photographs, which were oriented by standard aerial triangulation. Results allowed to improve the UAV data to a positional accuracy of 1 meter, making it compatible with the requirements established for the geographic database.</p>
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van Niel, T. G., and T. R. McVicar. "Assessing positional accuracy and its effects on rice crop area measurement: an application at Coleambally Irrigation Area." Australian Journal of Experimental Agriculture 41, no. 4 (2001): 557. http://dx.doi.org/10.1071/ea00140.
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If management decisions are based on geospatial data that have not been assessed for spatial accuracy, then debate about both the measurements and the decisions themselves can occur. This debate, in part, can be avoided by evaluating the spatial accuracy of geospatial data, leading to heightened confidence in both the data and the decisions made from the data. To increase the effectiveness of environmental compliance monitoring, the spatial accuracies of 2 Geographic Information System datasets were estimated at the Coleambally Irrigation Area, New South Wales. The first, high-resolution digital aerial photography acquired in January 2000, is the Geographic Information System baseline data for Coleambally Irrigation Area. The second, Digital Topographic Data Base roads data, although not a reference dataset at Coleambally Irrigation Area, is often used as a baseline dataset across Australia. Neither dataset met the National Mapping Council of Australia’s standard of map accuracy, so a new version of the digital aerial photography was created that did. The positional accuracy of the improved dataset was over 4 times more accurate than the Digital Topographic Data Base roads dataset and over 2.5 times more accurate than the original digital aerial photography. It was also found that the overall areal error of paddocks measured from the improved dataset decreased as more paddock areas were added together; a finding that has a direct impact on management decisions at Coleambally Irrigation Area. This study both provides a demonstration of how to assess and improve spatial accuracy and shows that this process is not unduly complicated.
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Wu, Chunxue, Bobo Ju, Yan Wu, and Naixue Xiong. "SlimRGBD: A Geographic Information Photography Noise Reduction System for Aerial Remote Sensing." IEEE Access 8 (2020): 15144–58. http://dx.doi.org/10.1109/access.2020.2966497.
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Gao, W., G. Wang, H. Li, W. Mao, S. Yin, and B. Yao. "RESEARCH ON THE KEY TECHNOLOGY OF UAV IN THE ACCURACY ASSESSMENT OF LAND COVER CLASSIFICATION." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B3-2022 (May 31, 2022): 1203–8. http://dx.doi.org/10.5194/isprs-archives-xliii-b3-2022-1203-2022.
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Abstract. This paper uses UAV low-altitude aerial photography technology, equipped with orthophoto camera, tilt camera and LiDAR camera, to obtain and process high-precision evaluation data, which is used to evaluate the correctness of land cover classification. Through the design of aerial photography scheme and data collection and processing, the rapidly acquired digital orthophoto, oblique 3D model data and laser LiDAR form a complete set of technical processes, which can relatively accurately and objectively monitor the quality of surface data for the existing geographical conditions. situation is assessed. The main purpose of this study is to further enrich the technical means of quality inspection of surveying and mapping products, to improve the technical level of quality inspection and acceptance of geographic condition monitoring data, and to improve the accuracy and reliability of data quality evaluation.