To see the other types of publications on this topic, follow the link: Digitale Photogrammetrie.
Journal articles on the topic 'Digitale Photogrammetrie'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Digitale Photogrammetrie.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Jesse, Frank, and Tobias Kutzner. "Digitale Photogrammetrie in der Bautechnik." Bautechnik 90, no. 11 (November 2013): 703–14. http://dx.doi.org/10.1002/bate.201300059.
Full text
2
Mao, Ying Dan. "Study of close-Range Photogrammetric Method Using Ordinary Digital Camera." Applied Mechanics and Materials 110-116 (October 2011): 4337–42. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.4337.
Full textAbstract:
With the progressive development of photogrammetric technology, the digital photogrammetric method based on the basic principles of digital imaging and photogrammetry has replaced the traditional photogrammetric mapping method and has been widely promoted and applied. In this paper, it studies further the issues about the image processing and photogrammetric algorithms of common digital cameras based on some research results in the traditional field of close-range photogrammetry, and verifies with actual examples the application of using digital cameras to implement the close-range photogrammetric method to engineering is feasible.
3
Kapica, Roman, Dana Vrublová, and Markéta Michalusová. "PHOTOGRAMMETRIC DOCUMENTATION OF CZECHOSLOVAK BORDER FORTIFICATIONS AT HLUČÍN-DARKOVIČKY." Geodesy and Cartography 39, no. 2 (June 28, 2013): 72–79. http://dx.doi.org/10.3846/20296991.2013.806243.
Full textAbstract:
The Institute of Geodesy and Mine Surveying of the Technical University Ostrava makes photogrammetric surveying of major built objects in the Moravian-Silesian region. The focus of the present study is on special monuments that form integral parts of regional history and make outstanding landmarks. Terrestrial photogrammetry was used as the surveying methods used. The primary goal of photogrammetric surveying is to identify geometric shapes and to create visualisations of objects. Photogrammetric surveying provides valuable documentary data for uses in the areas of the history of architecture and technical research as well as for renovations and advertising campaigns. Our 3D models were created by using terrestrial digital photogrammetry.
4
Ruzgienė, Birutė, Renata Bagdžiūnaitė, and Vilma Ruginytė. "SCANNING AERIAL PHOTOS USING A NON-PROFESSIONAL SCANNER." Geodesy and Cartography 38, no. 3 (October 1, 2012): 118–21. http://dx.doi.org/10.3846/20296991.2012.728901.
Full textAbstract:
For scanning analog aerial photographs, digital photogrammetry requires specific and expensive photogrammetric scanners. However, we only have a simple A4 format scanner useful for solving some special photogrammetric tasks applied for analyzing the possibilities of scanning photographic material. The paper investigates the peculiarities of scanning analog aerial photos using the scanner processing pictures smaller than an A4 format. The achieved results are compared with digital data obtained using a professional photogrammetric scanner. Experimental photogrammetric measurements have showed that the results of aerial photographs scanned by a nonprofessional scanner satisfy accuracy requirements for topographic mapping at a scale of 1:5000.
5
Žíhlavník, S., F. Chudý, and M. Kardoš. "Utilization of digital photogrammetry in forestry mapping." Journal of Forest Science 53, No. 5 (January 7, 2008): 222–30. http://dx.doi.org/10.17221/2176-jfs.
Full textAbstract:
At present, photogrammetric interpretation of aerial images is a dominant method of forestry mapping. In the last years, transition from analogue to digital photogrammetry has been distinct. Digital photogrammetry enables to achieve workflow effectivity, and so to decrease the final product costs. The objective of the submitted paper was to evaluate the availability of digital photogrammetry for the forestry mapping rationalization. Digital aerotriangulation using the ImageStation SSK system brings more accurate results without requirements for the use of a larger amount of control points. The results also demonstrated the use of colour infrared aerial images, and also black and white aerial images at the scale 1:15,000 for the orthoimage creation in the forestry mapping department. Compared with the black and white aerial images, the colour infrared images have an essentially more interesting content, mainly from the qualitative aspect, which shifts them to use in many forestry disciplines (mostly for determination of the health conditions of forests stands, …), in combination with the remote sensing of the Earth and GIS (Geographic Information Systems).
6
Bartoš, Karol, Katarína Pukanská, and Janka Sabová. "Overview of Available Open-Source Photogrammetric Software, its Use and Analysis." International Journal for Innovation Education and Research 2, no. 4 (April 30, 2014): 62–70. http://dx.doi.org/10.31686/ijier.vol2.iss4.170.
Full textAbstract:
The current technological era provides a wide range of geodetic procedures and methods to document the actual state of objects on the Earth surface and at the same time course and shape of surface itself. Digital photogrammetry is one of these technologies, it allows the use of methods such as single-image photogrammetry, stereo photogrammetry (optical scanning), convergent imaging and SfM method (structure-from-motion) with final data in the form of point clouds, digital spatial models, orthophotos and other derived documents. Similar outputs can be obtained also by other technologies, mainly by terrestrial laser scanning, whilst each of the two technologies offers certain advantages and disadvantages. Especially purchasing and operating costs are one of the major drawbacks of laser scanning (while being an advantage of photogrammetry). In recent years, there has been a significant increase in development and creation of new, freely accessible (open-source) photogrammetric software, thus reducing these financial demands even more. The aim of this paper is to provide a basic overview of some of the most suitable open-source photogrammetric software and point out their strengths and weaknesses.
7
Nancarrow, Jane-Heloise. "Countering the "Digital Uncanny"." Studies in Digital Heritage 3, no. 2 (June 13, 2020): 170–85. http://dx.doi.org/10.14434/sdh.v3i2.27748.
Full textAbstract:
Photogrammetry and laser scanning, or combinations of the two, are increasingly used in cultural heritage settings to create three-dimensional digital replicas. Yet the technical production processes involved can sometimes result in undesirable outcomes – flattening shadows, light, and surface textural variations of original artifacts. Many of these important visual cues contribute to our understanding of digital models as ‘historical objects,’ and the resulting overly digitized photogrammetry – lacking visual context and depth – can impede user interactivity. Viewers of digital heritage can become deterred by the uncanny, static, or unreal aesthetic of some photogrammetric and laser scans. This article considers two digital heritage projects: “Emotions3D: Bringing Digital Heritage to Life,”and the Smithsonian Apollo 11 Command Module scans in order to explore how technical and curatorial decisions can address issues in photogrammetric and laser post-processing. While often subtle, different post-processing choices are perceived and deeply cognitively and emotionally internalized by viewers and users of digital cultural heritage. Therefore, this paper assesses the relevance of emotions studies, theories of the ‘uncanny’ and the ‘uncanny valley,’ and issues of authenticity and best-practice digital interventions to enhance user engagement and accessibility through digital post-processing techniques.
8
Komissarov, Alexander V., and Valeriya V. Dedkova. "ANALYSIS OF CREATING BENCHMARK IMAGES METHODS TO TEST THE ACCURACY OF PHOTOGRAMMETRIC SOFTWARE." Vestnik SSUGT (Siberian State University of Geosystems and Technologies) 26, no. 2 (2021): 47–55. http://dx.doi.org/10.33764/2411-1759-2021-26-2-47-55.
Full textAbstract:
Digital photogrammetry is based on the use of specialized photogrammetric software (or digital photogrammetric systems) to solve problems related to the aerospace imagery processing. A wide range of programs and high price motivate consumers to choose the right software that responds to requirements of processing accuracy, amount of work, time of execution, etc. The main goal of this study is to analyze the existing methods of benchmark images creating to test photogrammetric pro-grams. The article carries out the analysis of existing techniques of creating benchmark images, classi-fication, selection of benchmark images types suitable for testing of photogrammetric software, and substantiates the necessity for checking of aerial survey results quality in specialized software.
9
Baláž, Vladimír. "3D Model of the Robot OTC Created by Digital Photogrammetry." Applied Mechanics and Materials 791 (September 2015): 174–77. http://dx.doi.org/10.4028/www.scientific.net/amm.791.174.
Full textAbstract:
Digital photogrammetry is a method, which is still seeking for its place in creating 3D models in engineering practice. To digitize and create 3D models using this method we need a digital camera and for processing images of objects photogrammetric software and PC.
10
Lo Brutto, M., D. Ebolese, and G. Dardanelli. "3D MODELLING OF A HISTORICAL BUILDING USING CLOSE-RANGE PHOTOGRAMMETRY AND REMOTELY PILOTED AIRCRAFT SYSTEM (RPAS)." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2 (May 30, 2018): 599–606. http://dx.doi.org/10.5194/isprs-archives-xlii-2-599-2018.
Full textAbstract:
The photogrammetric survey of architectural Cultural Heritage is a very useful and standard process in order to obtain accurate 3D data for the documentation and visualization of historical buildings. In particular, the integration of terrestrial close-range photogrammetry and Remotely Piloted Aircraft Systems (RPASs) photogrammetry allows to create accurate and reliable 3D models of buildings and to monitor their state of conservation. The use of RPASs has indeed become more popular in Cultural Heritage survey to measure and detect areas that cannot normally be covered using terrestrial photogrammetry or terrestrial laser scanner.<br> The paper presents the results of a photogrammetric survey executed to document the monumental complex of <i>Villa Lampedusa ai Colli</i> in Palermo (Italy), one of the most important historical buildings of the town. An integrated survey by close-range photogrammetry and RPAS photogrammetry was planned and carried out to reconstruct the 3D digital model of the monumental complex. Different images configurations (terrestrial, aerial nadiral, aerial parallel and oblique to the façades) have been acquired; data have been processed to verify the accuracy of the photogrammetric survey as regards the camera calibration parameters and the number of Ground Control Points (GCPs) measured on building façades.<br> A very detailed 3D digital model and high-resolution ortho-images of the façades were obtained in order to carry out further analysis for historical studies, conservation and restoration project. The final 3D model of <i>Villa Lampedusa ai Colli</i> has been compared with a laser scanner 3D model to evaluate the quality of the photogrammetric approach.<br> Beyond a purely metric assessment, 3D textured model has employed to generate 2D representations, useful for documentation purpose and to highlight the most significant damaged areas. 3D digital models and 2D representations can effectively contribute to monitor the state of conservation of historical buildings and become a very useful support for preliminary restoration works.
11
Fawcett, D., J. Blanco-Sacristán, and P. Benaud. "Two decades of digital photogrammetry: Revisiting Chandler’s 1999 paper on “Effective application of automated digital photogrammetry for geomorphological research” – a synthesis." Progress in Physical Geography: Earth and Environment 43, no. 2 (March 4, 2019): 299–312. http://dx.doi.org/10.1177/0309133319832863.
Full textAbstract:
Digital photogrammetry has experienced rapid development regarding the technology involved and its ease of use over the past two decades. We revisit the work of Jim Chandler who in 1999 published a technical communication seeking to familiarise novice users of photogrammetric methods with important theoretical concepts and practical considerations. In doing so, we assess considerations such as camera calibration and the need for photo-control and check points, as they apply to modern software and workflows, in particular for structure-from-motion (SfM) photogrammetry. We also highlight the implications of lightweight drones being the new platform of choice for many photogrammetry-based studies in the geosciences. Finally, we present three examples based on our own work, showing the opportunities that SfM photogrammetry offers at different scales and systems: at the micro-scale for monitoring geomorphological change, and at the meso-scale for hydrological modelling and the reconstruction of vegetation canopies. Our examples showcase developments and applications of photogrammetry which go beyond what was considered feasible 20 years ago and indicate future directions that applications may take. Nevertheless, we demonstrate that, in-line with Chandler’s recommendations, the pre-calibration of consumer-grade cameras, instead of relying entirely on self-calibration by software, can yield palpable benefits in micro-scale applications and that measurements of sufficient control points are still central to generating reproducible, high-accuracy products. With the unprecedented ease of use and wide areas of application, scientists applying photogrammetric methods would do well to remember basic considerations and seek methods for the validation of generated products.
12
Jiménez-Jiménez, Sergio Iván, Waldo Ojeda-Bustamante, Mariana Marcial-Pablo, and Juan Enciso. "Digital Terrain Models Generated with Low-Cost UAV Photogrammetry: Methodology and Accuracy." ISPRS International Journal of Geo-Information 10, no. 5 (April 29, 2021): 285. http://dx.doi.org/10.3390/ijgi10050285.
Full textAbstract:
Digital terrain model (DTM) generation is essential to recreating terrain morphology once the external elements are removed. Traditional survey methods are still used to collect accurate geographic data on the land surface. Given the emergence of unmanned aerial vehicles (UAVs) equipped with low-cost digital cameras and better photogrammetric methods for digital mapping, efficient approaches are necessary to allow rapid land surveys with high accuracy. This paper provides a review, complemented with the authors’ experience, regarding the UAV photogrammetric process and field survey parameters for DTM generation using popular commercial photogrammetric software to process images obtained with fixed-wing or multicopter UAVs. We analyzed the quality and accuracy of the DTMs based on four categories: (i) the UAV system (UAV platforms and camera); (ii) flight planning and image acquisition (flight altitude, image overlap, UAV speed, orientation of the flight line, camera configuration, and georeferencing); (iii) photogrammetric DTM generation (software, image alignment, dense point cloud generation, and ground filtering); (iv) geomorphology and land use/cover. For flat terrain, UAV photogrammetry provided a horizontal root mean square error (RMSE) between 1 to 3 × the ground sample distance (GSD) and a vertical RMSE between 1 to 4.5 × GSD, and, for complex topography, a horizontal RMSE between 1 to 7 × GSD and a vertical RMSE between 1.5 to 5 × GSD. Finally, we stress that UAV photogrammetry can provide DTMs with high accuracy when the photogrammetric process variables are optimized.
13
Tucci, G., A. Conti, L. Fiorini, F. Panighini, and E. I. Parisi. "EDUCATION AND TRAINING RESOURCES ON DIGITAL PHOTOGRAMMETRY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-5 (November 19, 2018): 45–50. http://dx.doi.org/10.5194/isprs-archives-xlii-5-45-2018.
Full textAbstract:
<p><strong>Abstract.</strong> Current close-range photogrammetry makes it possible to obtain 3-D models from imagery acquired with off-the-shelf digital cameras or other low-cost devices and processed with affordable software or apps in an almost automatic way. For this reason, a wider and wider public (often without a specific training, as archaeologists, architects, landscape planners, digital artists) is using these tools and their outcomes in many fields. However, the drawback of its ease of use is that photogrammetry is often used without any critical awareness of the metric quality of the results.</p><p> Therefore, it is necessary to bridge the growing gap between the spread of photogrammetric techniques and their use through appropriate educational processes. The paper presents and explain the results of the project “Education and training resources on digital photogrammetry”, financed in 2018 by ISPRS as part of the “Educational and Capacity Building Initiative” programme.</p><p> The project, after evaluating the current teaching methodologies and techniques, is producing and sharing original teaching materials (like videos and datasets) on digital photogrammetry. The aim is to transform the traditional transmissive didactic model in a newer one in which the students have an active role and improve their proficiencies solving actual case studies in practice. This induces students to rethink and better understand all the steps of the photogrammetric project design, acquisition and processing but above all to acquire greater skills to critically evaluate the acquired data and results.</p>
14
Mugnier, Clifford J. "Low Cost Digital Image Photogrammetry." Journal of Ship Production 14, no. 03 (August 1, 1998): 202–13. http://dx.doi.org/10.5957/jsp.1998.14.3.202.
Full textAbstract:
A problem in modular shipbuilding is the lack of a reliable, low-cost method of obtaining and utilizing dimensional control in 3D. Photogrammetry has been successfully used as a tool for this application, but because of the large number of systematic errors associated with film-based cameras, only very large shipyards are using it. Recently, developments in Charge Coupled Device (CCD) imaging arrays for cameras have allowed some success in applying photogrammetric techniques dimensional control Mainstream photogrammetric software and hardware configurations have been expensive and complicated. Digital camera systems and computers were purchased and programmed to tie existing inexpensive software packages with Geometric Dilution of Control (GDOP) error propagation analysis, originally designed for topographic mapping, into a tool for production shipyard fabrication dimensional control.
15
Teo, T. A. "3D DEFORMATION MEASUREMENT OF CONCRETE WALL USING CLOSE-RANGE PHOTOGRAMMETRY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B2-2020 (August 14, 2020): 1175–79. http://dx.doi.org/10.5194/isprs-archives-xliii-b2-2020-1175-2020.
Full textAbstract:
Abstract. Due to the development of digital image processing, digital photogrammetry is becoming an interesting research area in the field of structural monitoring in civil engineering. This study presents a photogrammetric measurement technique for concrete wall deformation monitoring in the destructive experiment. The non-contact photogrammetric measurement technique which provides surface deformation, is more flexible than the contacted single-point measurement technique (e.g., linear variable displacement transducers, LVDT). The major steps of the proposed scheme include (1) camera calibration, (2) orientation modeling, (3) 3D dense matching, and (4) filtering and interpolation for surface deformation. This experiment used two non-metric digital cameras to measure the deformation of a concrete wall in destructive experiment. The validation compared the image-derived and ranger-derived displacements during the experiment with mean error and standard errors of 32 epochs were −0.02mm and 0.81mm, respectively. The correlation between image-derived displacement and LVDT-derived displacement was 0.9803. The advantage of photogrammetry is to derive surface deformation which covered the whole wall during the experiment. In summary, this study demonstrated that photogrammetry is a useful measurement technique for concrete wall destructive experiment.
16
Hudec, P. "Analysis of accuracy of digital elevation models created from captured data by digital photogrammetry method." Slovak Journal of Civil Engineering 19, no. 4 (December 1, 2011): 28–36. http://dx.doi.org/10.2478/v10189-011-0021-0.
Full textAbstract:
Analysis of accuracy of digital elevation models created from captured data by digital photogrammetry methodA digital elevation model (DEM) is an important part of many geoinformatic applications. For the creation of DEM, spatial data collected by geodetic measurements in the field, photogrammetric processing of aerial survey photographs, laser scanning and secondary sources (analogue maps) are used. It is very important from a user's point of view to know the vertical accuracy of a DEM. The article describes the verification of the vertical accuracy of a DEM for the region of Medzibodrožie, which was created using digital photogrammetry for the purposes of water resources management and modeling and resolving flood cases based on geodetic measurements in the field.
17
Fissore, F., A. Guarnieri, and A. Vettore. "DIGITAL MODEL OFWALLS OF PADUA LOWRELIEF." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W8 (November 13, 2017): 95–98. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w8-95-2017.
Full textAbstract:
Photogrammetry has been widely used in the recent years in a number of applications, e.g. cultural heritage, surveying buildings and infrastructures. Despite nowadays its use is quite common, most of the used photogrammetric softwares are commercial. This paper aims at comparing the use of a free Matlab tool that is being developed at the University of Padova mostly for educational purposes with that of a commercial (and widely used) software (Agisoft PhotoScan). Despite the above mentioned free Matlab tool is designed to work for airborne photogrammetric, in this work it is used in a slightly different case: the 3D reconstruction of a low relief of the walls of Padova, which is on the fac¸ade of the church Santa Maria del Giglio, Venice, Italy.
18
Sužiedelytė-Visockienė, Jūratė. "IMPROVEMENT OF RAILWAY TOPOGRAPHIC PLANS UPDATING TECHNOLOGIES." TRANSPORT 21, no. 2 (June 30, 2006): 119–22. http://dx.doi.org/10.3846/16484142.2006.9638052.
Full textAbstract:
Peculiar technologies on the update of topographic map linear objects to scale 1:500–1:2000 are presented. Due to that resulted peculiarities make aerial photographs, carrying out digital aerial triangulation, renewing the topographical plan. The article deals with the submitted example of the topographic plan exhibiting the renovated railway in the city of Vilnius. The updating has been made on the aerial photograph on 1:4000 scale with the photogrammetric instrument PlaniComp P3. The objects possessing no identification in photogrammetry are measured by means of a geodetic method. The redacting varied objects in a database are drawn with AutoCadsoftware. On the basis of this work it is possible to state that for fast and exact updating of topographic plans a progressive photogrammetric method is recommended. It is advised the edition data base to be made by the same operator who made photogrammetric work. The objects are visible in an aerial photo, but no identifying photogrammetry should be applied locally. Digital, renewed data are necessary for drawing up geo information systems (GIS) of the railway, to be able to make fast decisions of urgent problems.
19
Bolognesi, M., A. Furini, V. Russo, A. Pellegrinelli, and P. Russo. "Accuracy of cultural heritage 3D models by RPAS and terrestrial photogrammetry." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-5 (June 5, 2014): 113–19. http://dx.doi.org/10.5194/isprsarchives-xl-5-113-2014.
Full textAbstract:
The combined use of high-resolution digital images taken from ground as well as from RPAS (Remotely Piloted Aircraft Systems) have significantly increased the potential of close range digital photogrammetry applications in Cultural Heritage surveying and modeling. It is in fact possible, thanks to SfM (Structure from Motion), to simultaneously process great numbers of aerial and terrestrial images for the production of a dense point cloud of an object. In order to analyze the accuracy of results, we started numerous tests based on the comparison between 3D digital models of a monumental complex realized by the integration of aerial and terrestrial photogrammetry and an accurate TLS (Terrestrial Laser Scanner) reference model of the same object.<br><br> A lot of digital images of a renaissance castle, assumed as test site, have been taken both by ground level and by RPAS at different distances and flight altitudes and with different flight patterns. As first step of the experimentation, the images were previously processed with Agisoft PhotoScan, one of the most popular photogrammetric software. The comparison between the photogrammetric DSM of the monument and a TLS reference one was carried out by evaluating the average deviation between the points belonging to the two entities, both globally and locally, on individual façades and architectural elements (sections and particular). In this paper the results of the first test are presented. A good agreement between photogrammetric and TLS digital models of the castle is pointed out.
20
Ruzgienė, Birutė. "PERFORMANCE EVALUATION OF NON-METRIC DIGITAL CAMERA FOR PHOTOGRAMMETRIC APPLICATION." Geodesy and cartography 31, no. 1 (August 3, 2012): 23–27. http://dx.doi.org/10.3846/13921541.2005.9636660.
Full textAbstract:
During the last year amateur low‐cost digital cameras are increasingly expected to contribute to the digital photogrammetry. An important aspect of the suitability of these cameras is determination of their geometrical instability. In order to evaluate amateur digital camera performance, small format, low resolution and low-cost CCD camera have been investigated in two considerations: determining inner orientation parameters at different time and estimating accuracy in test field experiments. The calibration results demonstrate the poor stability of such a digital camera. As a result of the instability, amateur cameras have limited possibilities in close-range photogrammetry. However, the investigated camera under certain limited accuracy requirements can be used for low-accuracy photogrammetric application.
21
Dlesk, A., K. Vach, and P. Holubec. "ANALYSIS OF POSSIBILITIES OF LOW-COST PHOTOGRAMMETRY FOR INTERIOR MAPPING." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-5/W3 (December 5, 2019): 27–31. http://dx.doi.org/10.5194/isprs-archives-xlii-5-w3-27-2019.
Full textAbstract:
Abstract. This paper shows the possibilities of using low-cost photogrammetry for interior mapping as a tool to gather fast and accurate data for 3D modelling and BIM. To create a 3D model of a building interior with a high level of detail requires techniques such as laser scanning and photogrammetry. In the case of photogrammetry, it is possible to use standard cameras and SfM software to create an accurate point cloud which can be used for 3D modelling and then for BIM. The images captured indoor are often captured under lower light conditions. Using different exposure during capturing of images of building interior was tested. Frequent plain walls of a building interior cause that the images are usually lack of any features and their photogrammetric processing is getting much more difficult. In some cases, results of photogrammetric processing are poor and inaccurate. In this paper, an experiment of creating a 3D model of a building interior using photogrammetric processing of images was carried out. For this experiment digital camera with two different lenses (16 mm lens and fisheye lens) was used. For photogrammetric processing were chosen different software. All the results were compared to each other and to the laser scanning data of the interior. At the end of the paper, the discussion of the advantages and disadvantages of the shown method has been made.
22
Sadjadi, S. Y. "USING DIGITAL TERRESTRIAL PHOTOGRAMMETRY IN CULTURAL HERITAGE CASE STUDY: THE GREAT WALL OF GORGAN IN IRAN." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W16 (October 1, 2019): 555–61. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w16-555-2019.
Full textAbstract:
Abstract. An assessment of the influence of using digital terrestrial photogrammetry for surveying and documentation of cultural objects is presented in this paper. The approaches including digital image enhancement, digital rectification and restitution, feature extraction for the creation of a three-dimension geographical information system model from the photogrammetric record and the computer visualisation of cultural monuments. Manual three-dimension processing of terrestrial images using analogue photogrammetric procedures is slow, can register little information and has limited application and cannot be re-examined if the information desired is not directly presented. In addition, it is a very time-consuming task and requires the skill of qualified personnel. It seems there is a need for an environment-based information system with the ability to display precise and measurable imagery for use of the architectural and archaeological information system by integrating digital photogrammetry and AutoCAD facilities as applicable to support the reconstruction of many cultural heritage places. Architectural structuring and guidelines can be used to develop invaluable historical monuments in Iran such as the Great Wall of Gorgan. While the research is in completion, the output of the Great Wall of Gorgan can be documented and recorded in the world.
23
Voitechovič, Mažena, and Birutė Ruzgienė. "A COMPARISON ANALYSIS OF DIFFERENT PHOTOGRAMMETRIC SOFTCOPIES FOR GEODATA PRODUCTION." Geodesy and cartography 40, no. 4 (December 16, 2014): 175–80. http://dx.doi.org/10.3846/20296991.2014.987459.
Full textAbstract:
Up-to-date mapping technologies for geodata production are widely applicable in Remote Sensing and Photogrammetry Communities. Therefore, the education in Remote Sensing and photogrammetric methods becomes very important using different image processing software for the terrain mapping purposes, spatial data modelling, etc. The use of new methods, technologies and professional widely-known systems demonstrates the desire to increase mapping capability. Despite that, digital didactics photogrammetric systems might be used (particularly in education process) simultaneously, this way getting more efficiency results. The objective of the research is to analyse some aspects of the use of digital photogrammetric softcopies, applied for terrain mapping: professional IMAGE ERDAS with LPS, LISA and Didactics Digital Photogrammetric Systems (DDPS). The experimental investigations lead to contiguity of this different software in consideration of the following criteria: accuracy, flexibility and time. The digital terrain models and orthophoto maps, created using two technologies, are almost the same due to time required for separate image processing steps. However, full workflow on DDPS requires about 2.5 times less time than on LPS. The photogrammetric measurement results demonstrate that there are some differences in accuracy due to stereoscopic measurements. When processing the images, the defined value of accuracy estimators meets the requirements for topographic mapping; however, DEM needs a separate study.
24
SUKHOV, Arseniy Konstantinovich, Mikhail Georgievich VYSTRCHIL, Vladivir Nikolaevich GUSEV, Aleksandr Aleksandrovich BLISHCHENKO, and Andrey Viktorovich DAN’KO. "Study of the quality construction of photogrammetric models obtained in low-light conditions." NEWS of the Ural State Mining University 59, no. 3 (September 15, 2020): 140–48. http://dx.doi.org/10.21440/2307-2091-2020-3-140-148.
Full textAbstract:
Relevance of the research topic. The paper shows main results of environmental parameters that affect the quality of 3D-models obtained by the photogrammetric method of surveying. Research objective. The article presents: the fundamental possibility of using a small-sized photogrammetric device for underground surveying and the parameters that affect the result of shooting in a confined low-light space. Research methods. Experiments included a set of independent serial photographs of a test site. To increase the results of experiments, object with a simple geometric shape have been used as test objects for extrapolating of the results of the survey to products of standard metal products. In these conditions, imitating abstract underground mine workings: with the lack of lighting, confined spaces, a small number of characteristic points in the background. The texture of the subject of photogrammetric survey and common geometric parameters of photo base accepted as studied factors. Various images were projected onto the test scene to form an artificial texture. Results and its applications. The experimental results confirm the possibility of using the proposed methods for identifying engineering communications nodes, oil and gas production facilities, elements of lifting machines and conductors in vertical mining devices. In addition, the authors performed an idea of improving the quality of photogrammetric models by projecting temporary artificial textures on the subject. The results of the work can be used for the improving of the methods of surveying, using digital photogrammetry technology Findings. It is possible to imrove the quality of digital photogrammetric models of engineering structures by projecting artificial textures onto them. The possibility of the creation of models of the subject increases the accuracy and controllability of the result. With increasing contrast and complexity of the texture being applied, digital photogrammetry algorithms better determine the correspondence between a pair of photographs.
25
Mikoláš, Milan, Petr Jadviščok, and Vlastimil Molčák. "APPLICATION OF TERRESTRIAL PHOTOGRAMMETRY TO THE CREATION OF A 3D MODEL OF THE SAINT HEDWIG CHAPEL IN THE KAŇOVICE." Geodesy and cartography 40, no. 1 (March 28, 2014): 8–13. http://dx.doi.org/10.3846/20296991.2014.906923.
Full textAbstract:
The present article focuses on application of terrestrial photogrammetry for the purposes of creation of photogrammetric documentation of building structures with the use of digital camera – a widely accessible device. First, the article briefly describes the individual intermediate operations of the whole process leading to the creation of a three-dimensional structure. Next, attention is given to operations related to camera calibration, reconnaissance of the locality of interest, photographing itself, creation of the 3D model as well as to presentation of graphical output. In conclusion, the article focuses on determining the accuracy of photogrammetric measuring.
26
Wojnarowski, A. E., A. B. Leonteva, S. V. Tyurin, S. G. Tikhonov, and O. V. Artemeva. "PHOTOGRAMMETRIC TECHNOLOGY FOR REMOTE HIGH-PRECISION 3D MONITORING OF CRACKS AND DEFORMATION JOINTS OF BUILDINGS AND CONSTRUCTIONS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-5/W2 (September 20, 2019): 95–101. http://dx.doi.org/10.5194/isprs-archives-xlii-5-w2-95-2019.
Full textAbstract:
<p><strong>Abstract.</strong> Monitoring of cracks and deformation joints of buildings and engineering constructions can be performed effectively using contemporary methods of photogrammetry. Our study allowed us to design the technology for such a monitoring. This technology is adapted for use by building operation and building inspection specialists and does not require special knowledge in photogrammetry. The monitoring equipment includes two blocks of photogrammetric deformation marks, a digital camera and processing software. Each block of deformation marks is designed as a plate of 60 by 40&thinsp;mm size where several dozens of marks are fixed (size of the plate and number of marks may vary). The relative positions of the marks on the plate are determined while block calibration with an accuracy of several microns. While monitoring is performed, two blocks of deformation marks are fixed on both sides of the crack or deformation join. Then marks are photographed. Almost any digital camera is suitable, beginning with smartphone camera and ending with specialized photogrammetric camera. Further processing of collected imagery is performed on the basis of rigorous methods of photogrammetry (specialized software were developed). The processing assumes automatic identification and measurement of marks on digital photographic images with sub-pixel accuracy. Additionally, the photogrammetric calibration and distortion correction are performed for each image. Three-dimensional spatial solution is possible both in the case of single image processing, and in the case of stereopair processing. The dynamics of crack development in three dimensions is determined by the results of several cycles of observations collected over period. Our technology allows to ensure the accuracy of the coordinates and deformations at the level of 0.005&ndash;0.020&thinsp;mm for the photographing distances from 0.1 to 40&thinsp;m.</p>
27
Wojciechowska, Gabriela, and Jakub Łuczak. "Use of close-range photogrammetry and UAV in documentation of architecture monuments." E3S Web of Conferences 71 (2018): 00017. http://dx.doi.org/10.1051/e3sconf/20187100017.
Full textAbstract:
The available photogrammetric solutions, combined with properly conducted surveying measurements enable to create fully applicable, three-dimensional models of architectural structures, which can be applied in, i.e. protection of cultural heritage or conservational documentation. Currently, we can see an increase in use of digital non-metric cameras in a photogrammetric inventory of sacred monuments. Properly obtained and analysed data allow to create a digital model of an object, which later might serve as a basis for a vector image used for architectural and construction purposes. The paper presents the procedure of creation of 3D models of sacred historic monuments of relatively small sizes with the use of terrestrial photogrammetry and UAV using the Agisoft PhotoScan Professional software.
28
Kumar, Umesh. "Replacement of Professional Photogrammetric Workstations with Low Cost or Free of Charge Photogrammetric Software and Services for Image Triangulation and Image Matching." Journal on Geoinformatics, Nepal 12 (October 31, 2013): 42–48. http://dx.doi.org/10.3126/njg.v12i0.9072.
Full textAbstract:
In the modern context of digital technology in the field of surveying and mapping, the technique of digital photogrammetry plays crucial role in all steps of mapping. There are some very expensive as well as low cost and free softwares are available in the market for professional photogrammetric work stations. The image triangulation and image matching is one of the very important steps of photogrammetry for which LPS as a commercial software is available in market. There are some low cost and free software as 123D Catch and Patch Boased Multi View Stereo Softwear (PMVS) also available. So, this paper mainly deals with the accuracy as well as the performance of those software for aerial triangulation and image matching for airborne image data to substitute commercial software for photogrammetric workstations. The accuracy assessment of image orientation, points cloud as well as DSM generated from those points cloud are also performed and compared with all products of LPS as commercial software. Nepalese Journal on Geoinformatics -12, 2070 (2013AD): 42-48
29
Ruzgienė, Birutė, and Edita Aleknienė. "ANALYTICAL AND DIGITAL PHOTOGRAMMETRIC GEODATA PRODUCTION SYSTEMS (A COMPARISON TEST)." Geodesy and cartography 33, no. 2 (August 3, 2012): 50–54. http://dx.doi.org/10.3846/13921541.2007.9636717.
Full textAbstract:
Up-to-date mapping technologies are in the middle of transition from analytical to digital. The usage of new methods and technologies implies the desire to increase mapping capability. Despite that, analytical and digital methods may be used simultaneously, thus getting more efficient results. The research objective is to present some aspects of functionality of both digital and analytical photogrammetric mapping approaches in generating 3D geodata. The experimental results show which of the two methods could lead to a more flexible mapping production in consideration of the following criteria: accuracy, flexibility, time and cost. The main result of investigations shows, that the orthophoto generation is successfully using fully automatic systems. The digital terrain models created by two technologies are almost the same due to time-consuming. Therefore more time is required for the Digital Photogrammetric System when the terrain is rougher. Despite the fact that digital photogrammetric mapping technology drastically develops, there is no doubt that analytical photogrammetry is still a significant production system for large‐scale mapping. The results demonstrate that there is not too much difference in accuracy between the analytical and the digital 14 μm pixel size images processing. The interpretation capability of experimental test area in the Digital Photogrammetric System was more complicated as it was by the analytical plotter. Two systems integrations have been foreseen. Digital terrain model obtained by the analytical plotter can be transferred to digital mapping system for orthophoto generation.
30
Re, C., S. Robson, R. Roncella, and M. Hess. "Metric Accuracy Evaluation of Dense Matching Algorithms in Archeological Applications." Geoinformatics FCE CTU 6 (December 21, 2011): 275–82. http://dx.doi.org/10.14311/gi.6.34.
Full textAbstract:
In the cultural heritage field the recording and documentation of small and medium size objects with very detailed Digital Surface Models (DSM) is readily possible by through the use of high resolution and high precision triangulation laser scanners. 3D surface recording of archaeological objects can be easily achieved in museums; however, this type of record can be quite expensive. In many cases photogrammetry can provide a viable alternative for the generation of DSMs. The photogrammetric procedure has some benefits with respect to laser survey. The research described in this paper sets out to verify the reconstruction accuracy of DSMs of some archaeological artifacts obtained by photogrammetric survey. The experimentation has been carried out on some objects preserved in the Petrie Museum of Egyptian Archaeology at University College London (UCL). DSMs produced by two photogrammetric software packages are compared with the digital 3D model obtained by a state of the art triangulation color laser scanner. Intercomparison between the generated DSM has allowed an evaluation of metric accuracy of the photogrammetric approach applied to archaeological documentation and of precision performances of the two software packages.
31
Gruen, Armin W., and Horst A. Beyer. "REAL-TIME PHOTOGRAMMETRY AT THE DIGITAL PHOTOGRAMMETRIC STATION (DIPS) OF ETH ZURICH." Canadian Surveyor 41, no. 2 (June 1987): 181–99. http://dx.doi.org/10.1139/tcs-1987-0014.
Full textAbstract:
Real-time photogrammetry (RTP) is a non-contact three-dimensional measurement technique with a response time of one video cycle. As part of a research and development program for digital and real-time photogrammetry, the Institute of Geodesy and Photogrammety at the Swiss Federal Institute of Technology, Zurich, Switzerland, has established the Digital Photogrammetric Station (DIPS). The hardware and software of this development system is explained. Hardware aspects of solid-state cameras relevant to camera calibration for RTP are discussed. An off-line bundle adjustment program with additional parameters has been installed. An initial calibration and point positioning test using this program and existing image processing algorithms has been performed. The processing steps and results are analyzed. Accuracies, as computed from object space check points, in planimetry of 1:5000 or 0.09 pixel pitch, in depth of 0.08%c of object distance, have been achieved.
32
Galantucci, L. M., R. Ferrandes, and G. Percoco. "Digital Photogrammetry for Facial Recognition." Journal of Computing and Information Science in Engineering 6, no. 4 (May 30, 2006): 390–96. http://dx.doi.org/10.1115/1.2356499.
Full textAbstract:
In this paper, the authors present a biometric low-cost 3D acquisition system, based on a digital photogrammetry technique. The aim of the work is to analyze the suitability of this system for facial recognition purposes. The facial data of a set of 20 people were acquired with the photogrammetric system developed by the authors, and different CAD 3D models were reconstructed for each person. The results are quantified by aligning the models and calculating mean distances and standard deviations between them using two different methods. The former considers the entire face; the latter is based on a few fiducial points of the face.
33
Umicevic-Davidovic, Mirjana, Marijana Arapovic-Savic, Adriana Arbutina, Tijana Adamovic, and Igor Djukic. "Photogrammetric analysis of postextraction space closure." Serbian Dental Journal 68, no. 2 (2021): 59–67. http://dx.doi.org/10.2298/sgs2102059u.
Full textAbstract:
Introduction. When planning orthodontic treatment, it is sometimes necessary to apply the extraction of individual teeth, in order to achieve proper occlusion and an acceptable aesthetic appearance. Clinicians give the greatest advantage to elastic chains as a method for post-extraction space closure during treatment with fixed orthodontic appliances. When closing post-extraction spaces, it is necessary to measure them in order to adjust the treatment plan. One of the most acceptable methods is photogrammetry. The aim of this study was to analyze, using a photogrammetric method, the efficacy of post-extraction space closure with elastic chains during orthodontic treatment with fixed orthodontic appliances. Material and Methods. The total sample in study consisted of 38 post-extraction spaces in 19 patients who were indicated for first premolars extraction and use of fixed orthodontic appliances in order to achieve treatment goal. Elastic chains were used to close post-extraction spaces. Post-extraction sites were monitored for 6 months with follow-up examinations every 4 weeks. Mechanisms were activated at controlled examinations, and measurements of the width of post-extraction spaces were performed by photogrammetry and digital caliper. Results. The results showed that average reduction of post-extraction space width was 1.00 mm per month by photogrammetric measurement, while the average values of measurements with a digital caliper were 1.02 mm. The average values were measured in six time intervals and a statistically significant change in average intervals of post-extraction spaces during 6 months was determined. Conclusion. The elastic chain has proven to be a very effective mechanism for closing post-extraction space, and photogrammetry as a simple and precise method for monitoring results of treatment. Since the difference in relation to measurements with a digital caliper is minimal, photogrammetry can be routinely applied in everyday practice.
34
Burdziakowski, Pawel. "Polymodal Method of Improving the Quality of Photogrammetric Images and Models." Energies 14, no. 12 (June 11, 2021): 3457. http://dx.doi.org/10.3390/en14123457.
Full textAbstract:
Photogrammetry using unmanned aerial vehicles has become very popular and is already commonly used. The most frequent photogrammetry products are an orthoimage, digital terrain model and a 3D object model. When executing measurement flights, it may happen that there are unsuitable lighting conditions, and the flight itself is fast and not very stable. As a result, noise and blur appear on the images, and the images themselves can have too low of a resolution to satisfy the quality requirements for a photogrammetric product. In such cases, the obtained images are useless or will significantly reduce the quality of the end-product of low-level photogrammetry. A new polymodal method of improving measurement image quality has been proposed to avoid such issues. The method discussed in this article removes degrading factors from the images and, as a consequence, improves the geometric and interpretative quality of a photogrammetric product. The author analyzed 17 various image degradation cases, developed 34 models based on degraded and recovered images, and conducted an objective analysis of the quality of the recovered images and models. As evidenced, the result was a significant improvement in the interpretative quality of the images themselves and a better geometry model.
35
Irvine-Fynn, Tristram D. L., Enoc Sanz-Ablanedo, Nick Rutter, Mark W. Smith, and Jim H. Chandler. "Measuring glacier surface roughness using plot-scale, close-range digital photogrammetry." Journal of Glaciology 60, no. 223 (2014): 957–69. http://dx.doi.org/10.3189/2014jog14j032.
Full textAbstract:
AbstractGlacier roughness at sub-metre scales is an important control on the ice surface energy balance and has implications for scattering energy measured by remote-sensing instruments. Ice surface roughness is dynamic as a consequence of spatial and temporal variation in ablation. To date, studies relying on singular and/or spatially discrete two-dimensional profiles to describe ice surface roughness have failed to resolve common patterns or causes of variation in glacier surface morphology. Here we demonstrate the potential of close-range digital photogrammetry as a rapid and cost-effective method to retrieve three-dimensional data detailing plot-scale supraglacial topography. The photogrammetric approach here employed a calibrated, consumer-grade 5 Mpix digital camera repeatedly imaging a plot-scale (≤25 m2) ice surface area on Midtre Lovénbreen, Svalbard. From stereo-pair images, digital surface models (DSMs) with sub-centimetre horizontal resolution and 3 mm vertical precision were achieved at plot scales ≤4 m2. Extraction of roughness metrics including estimates of aerodynamic roughness length (z0) was readily achievable, and temporal variations in the glacier surface topography were captured. Close-range photogrammetry, with appropriate camera calibration and image acquisition geometry, is shown to be a robust method to record sub-centimetre variations in ablating ice topography. While the DSM plot area may be limited through use of stereo-pair images and issues of obliquity, emerging photogrammetric packages are likely to overcome such limitations.
36
Amrullah, C., D. Suwardhi, and I. Meilano. "PRODUCT ACCURACY EFFECT OF OBLIQUE AND VERTICAL NON-METRIC DIGITAL CAMERA UTILIZATION IN UAV-PHOTOGRAMMETRY TO DETERMINE FAULT PLANE." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences III-6 (June 7, 2016): 41–48. http://dx.doi.org/10.5194/isprsannals-iii-6-41-2016.
Full textAbstract:
This study aims to see the effect of non-metric oblique and vertical camera combination along with the configuration of the ground control points to improve the precision and accuracy in UAV-Photogrammetry project. The field observation method is used for data acquisition with aerial photographs and ground control points. All data are processed by digital photogrammetric process with some scenarios in camera combination and ground control point configuration. The model indicates that the value of precision and accuracy increases with the combination of oblique and vertical camera at all control point configuration. The best products of the UAV-Photogrammetry model are produced in the form of Digital Elevation Model (DEM) compared to the LiDAR DEM. Furthermore, DEM from UAV-Photogrammetry and LiDAR are used to define the fault plane by using cross-section on the model and interpretation to determine the point at the extreme height of terrain changes. The result of the defined fault planes indicate that two models do not show any significant difference.
37
EL-ASHMAWY, Khalid L. A. "USING SMART PHONES FOR DEFORMATIONS MEASUREMENTS OF STRUCTURES." Geodesy and cartography 43, no. 2 (June 25, 2017): 66–72. http://dx.doi.org/10.3846/20296991.2017.1330770.
Full textAbstract:
The present work tests the suitability of using the digital cameras of smart phones for close range photogrammetry applications. For this purpose two cameras of smart phones Lumia 535 and Lumia 950 XL were used. The resolutions of the two cameras are 5 and 20 Mpixels respectively. The tests consist of (a) self calibration of the two cameras, (b) the implementation of close-range photogrammetry using the cameras of the two smart phones, theodolite intersection with LST method, and linear variable displacement transducers (LVDTs) for the measurement of vertical deflections, and (c) accuracy of photogrammetric determination of object space coordinates. The results of using Lumia 950 XL are much better than using Lumia 535 and are better or comparable to the results of theodolite intersection with least squares technique (LST). Finally, it can be stated that the digital cameras of smart phones are suitable for close range photogrammetry applications according to accuracy, costs and flexibility.
38
Amrullah, C., D. Suwardhi, and I. Meilano. "PRODUCT ACCURACY EFFECT OF OBLIQUE AND VERTICAL NON-METRIC DIGITAL CAMERA UTILIZATION IN UAV-PHOTOGRAMMETRY TO DETERMINE FAULT PLANE." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences III-6 (June 7, 2016): 41–48. http://dx.doi.org/10.5194/isprs-annals-iii-6-41-2016.
Full textAbstract:
This study aims to see the effect of non-metric oblique and vertical camera combination along with the configuration of the ground control points to improve the precision and accuracy in UAV-Photogrammetry project. The field observation method is used for data acquisition with aerial photographs and ground control points. All data are processed by digital photogrammetric process with some scenarios in camera combination and ground control point configuration. The model indicates that the value of precision and accuracy increases with the combination of oblique and vertical camera at all control point configuration. The best products of the UAV-Photogrammetry model are produced in the form of Digital Elevation Model (DEM) compared to the LiDAR DEM. Furthermore, DEM from UAV-Photogrammetry and LiDAR are used to define the fault plane by using cross-section on the model and interpretation to determine the point at the extreme height of terrain changes. The result of the defined fault planes indicate that two models do not show any significant difference.
39
Colomo-Jiménez, C., J. L. Pérez-García, T. Fernández-del Castillo, J. M. Gómez-López, and A. T. Mozas-Calvache. "METHODOLOGY FOR ORIENTATION AND FUSION OF PHOTOGRAMMETRIC AND LIDARDATAS FOR MULTITEMPORAL STUDIES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 21, 2016): 639–45. http://dx.doi.org/10.5194/isprsarchives-xli-b7-639-2016.
Full textAbstract:
Nowadays, data fusion is one of the trends in geomatics sciences, due to the necessity of merging data from different kind of sensors and periods of time. Also, to extrract the maximum information from data and useful multitemporal analysis, an exact geoconnection of all datasets in a common and stable reference system is essential. The results of the application of a methodology for an integrated orientation into a common reference system using data obtained by LiDAR systems, digital and historical photogrammetric flights dataset, used for proper analysis in multitemporal studies, are presented in this paper. In order to analyse the results of the presented methodology, several photogrammetric datasets have been used. This data corresponds with digital and analogic data. The most current flight (2010) combines data obtained with digital photogrammetric camera and LiDAR sensor which will be used as reference model for all subsequent photogrammetry flights. The philosophy of the methodology consists of orientating all photogrammetric flights to the DEM obtained by LiDAR data. All the models obtained from every photogrammetric block are comparable in terms of the geometric resolution of each one. For that reason, altimetric stable points are extracted automatically from the LiDAR points cloud to use these points such as altimetric control point in the different flights that must be oriented. Using LiDAR control points, we demonstrate the improvement in the results between initial orientation and final results. Also it is possible to improve the planimetric correspondence between different photogrammetric blocks using only altimetric control points iteratively.
40
Colomo-Jiménez, C., J. L. Pérez-García, T. Fernández-del Castillo, J. M. Gómez-López, and A. T. Mozas-Calvache. "METHODOLOGY FOR ORIENTATION AND FUSION OF PHOTOGRAMMETRIC AND LIDARDATAS FOR MULTITEMPORAL STUDIES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 21, 2016): 639–45. http://dx.doi.org/10.5194/isprs-archives-xli-b7-639-2016.
Full textAbstract:
Nowadays, data fusion is one of the trends in geomatics sciences, due to the necessity of merging data from different kind of sensors and periods of time. Also, to extrract the maximum information from data and useful multitemporal analysis, an exact geoconnection of all datasets in a common and stable reference system is essential. The results of the application of a methodology for an integrated orientation into a common reference system using data obtained by LiDAR systems, digital and historical photogrammetric flights dataset, used for proper analysis in multitemporal studies, are presented in this paper. In order to analyse the results of the presented methodology, several photogrammetric datasets have been used. This data corresponds with digital and analogic data. The most current flight (2010) combines data obtained with digital photogrammetric camera and LiDAR sensor which will be used as reference model for all subsequent photogrammetry flights. The philosophy of the methodology consists of orientating all photogrammetric flights to the DEM obtained by LiDAR data. All the models obtained from every photogrammetric block are comparable in terms of the geometric resolution of each one. For that reason, altimetric stable points are extracted automatically from the LiDAR points cloud to use these points such as altimetric control point in the different flights that must be oriented. Using LiDAR control points, we demonstrate the improvement in the results between initial orientation and final results. Also it is possible to improve the planimetric correspondence between different photogrammetric blocks using only altimetric control points iteratively.
41
Wierzbicki, Damian, and Marcin Nienaltowski. "Accuracy Analysis of a 3D Model of Excavation, Created from Images Acquired with an Action Camera from Low Altitudes." ISPRS International Journal of Geo-Information 8, no. 2 (February 13, 2019): 83. http://dx.doi.org/10.3390/ijgi8020083.
Full textAbstract:
In the last few years, Unmanned Aerial Vehicles (UAVs) equipped with compact digital cameras, have become a cheap and efficient alternative to classic aerial photogrammetry and close-range photogrammetry. Low-altitude photogrammetry has great potential not only in the development of orthophoto maps but is also increasingly used in surveying and rapid mapping. This paper presents a practical aspect of the application of the custom homemade low-cost UAV, equipped with an action camera, to obtain images from low altitudes and develop a digital elevation model of the excavation. The conducted analyses examine the possibilities of using low-cost UAVs to deliver useful photogrammetric products. The experiments were carried out on a closed excavation in the town of Mince (north-eastern Poland). The flight over the examined area was carried out autonomously. A photogrammetric network was designed, and the reference areas in the mine were measured using the Global Navigation Satellite System-Real Time Kinematic (GNSS-RTK) method to perform accuracy analyses of the excavation 3D model. Representation of the created numerical terrain model was a dense point cloud. The average height difference between the generated dense point cloud and the reference model was within the range of 0.01–0.13 m. The difference between the volume of the excavation measured by the GNSS kinematic method and the volume measured on the basis of a dense point cloud was less than 1%. The obtained results show that the application of the low-cost UAV equipped with an action camera with a wide-angle lens, allows for obtaining high-accuracy images comparable to classic, compact digital cameras.
42
Ma, Sung Jin, I. Seul Kim, Jae Myeong Kim, and Yun Soo Choi. "Efficiency Analysis of Aerial Photogrammetry According to Aerial Photogrammetric Frame Digital Camera Specification." Journal of Korean Society for Geospatial Information System 26, no. 4 (December 31, 2018): 47–56. http://dx.doi.org/10.7319/kogsis.2018.26.4.047.
Full text
43
Kwiatkowski, Jacek, Wojciech Anigacz, and Damian Beben. "A Case Study on the Noncontact Inventory of the Oldest European Cast-iron Bridge Using Terrestrial Laser Scanning and Photogrammetric Techniques." Remote Sensing 12, no. 17 (August 25, 2020): 2745. http://dx.doi.org/10.3390/rs12172745.
Full textAbstract:
Conventional measurement technologies of transportation infrastructures consist of discrete surveys which can be inconvenient in practice. Furthermore, data obtained using these methods are restricted to several points (or elements) placed on the observed structures. Modern survey techniques—for example, terrestrial laser scanning (TLS) and photogrammetric—allow for the surveying of quasi-continuous surfaces of examined structures. The examined object is an historic cast-iron suspension bridge in Ozimek (south of Poland). The bridge was constructed in 1825–1827 and constitutes the oldest European bridge of this type. The surveys were conducted using TLS and digital photogrammetric techniques. The data obtained were compared with traditional survey results (reference data) and the project. The achieved effects of the measurements show that the discrepancies between the applied techniques (TLS and photogrammetry) and reference methods varied only within several millimeters and can be regarded as satisfactory. Better compliance was obtained for TLS than photogrammetry. The main benefits of the applied techniques include reducing time in the field and obtaining a three-dimensional model of the structure that has satisfactory accuracy.
44
Poloprutský, Zdeněk, Marek Fraštia, and Marián Marčiš. "3D DIGITAL RECONSTRUCTION BASED ON ARCHIVED TERRESTRIAL PHOTOGRAPHS FROM METRIC CAMERAS." Acta Polytechnica 59, no. 4 (August 31, 2019): 384–98. http://dx.doi.org/10.14311/ap.2019.59.0384.
Full textAbstract:
The paper deals with the possibilities and limitations of the image processing of digitalized terrestrial photographs from analogue metric cameras. By the end of the 20th century, analogue metric cameras such as Zeiss UMK were used for documentation purposes in the fields of industrial and investment construction, nature and landscape preservation, heritage preservation, etc. Currently, the collections of photographs are stored at specialized archives of many different institutions, such as libraries, museums, universities, etc. These sets of photographs provide a material background for a 3D digital reconstruction of a subject of interest at the time of taking the photographs. The digital image processing of old photographs may be more difficult due to unknown parameters of the used camera, such as the focal length, image coordinates of the fiducial marks and distortion parameters of the lens system, etc. In this case, it may be difficult to process these photographs in a photogrammetric software. The paper presents a methodology for the digital photogrammetric processing of analogue terrestrial photographs. The data processing is based on the parameters of the used metric cameras, which are described in their calibration reports. The image processing was tested in two commercial photogrammetric software tools that utilize the technology of Structure-from-Motion (SfM) or multiimage intersection photogrammetry to process image datasets.
45
W. Schindler, Alexander. "Reflections on Photogrammetry." Membrana Journal of Photography, Vol. 3, no. 1 (2018): 34–41. http://dx.doi.org/10.47659/m4.034.art.
Full textAbstract:
This article presents an overview of the history, principles, and current developments in the media technological field of photogrammetry. By chronicling the isomorphic shift taking place in image capturing, we seek to show that photogrammetry has led the way forward in seeing technical images not only as two dimensional projections, but as three-dimensional model-based images. In the mid-nineteenth century, photogrammetry was first used for the documentation of architectural objects and it later became a standard technique in aerial photography. Although its fields of application have become more extensive, photogrammetry’s basic principle hasn’t fundamentally changed: it is still defined as the three- dimensional geometric reconstruction of two-dimensional photographs through the measuring of reference points. With digital technological standards and advances in camera technology, photogrammetric imaging nowadays is intensively used for object recognition in machine vision and robotics. Beside this, photogrammetry is also opening new possibilities for documentation in the fields of investigative arts, this being explored with a discussion on the “Ground Truth” project from Forensic Architecture. Keywords: investigative art, machine vision, object recognition, photogrammetry, photography
46
Angulo Fornos, Roque. "La fotogrametría digital: una herramienta para la recuperación de arquitecturas perdidas. Torre del Homenaje del Castillo de Constantina." Virtual Archaeology Review 4, no. 8 (November 20, 2015): 140. http://dx.doi.org/10.4995/var.2013.4355.
Full textAbstract:
<p>In recent years, the continuing development of architectural survey techniques based on point clouds captured by laser scanning has revolutionized the field of<br />documentation prior to intervention, management or research in heritage. No clutch, affirming that these techniques have displaced others, such as photogrammetry, that have played an important role in the field of architectural survey, is a precipitated guess. Among other advantages, photogrammetry offers the ability to capture missing realities, lacking the materialness required for the use of laser scanner. In that vein, this paper describes the work of photogrammetric survey, location of parts and graphical anaparástasis of prior state to collapse of the Keep of the Castle of Constantine.</p>
47
Kardoš, M. "Methods of digital photogrammetry in forest management in Slovakia." Journal of Forest Science 59, No. 2 (February 12, 2013): 54–63. http://dx.doi.org/10.17221/35/2012-jfs.
Full textAbstract:
The practical aspect of utilization of digital photogrammetry methods and their products in Slovak forestry is presented. We deal with the comparison of various data obtained by digital cameras, their accuracy, utilization and effectiveness for mapping. Based on presented results we summarize the main conclusions in the field of forest mapping. We also deal with the process of pan-sharpening for the preparation of image data for the interpretation and classification of forestry features. Also, the statistical characteristics of two photogrammetric projects with different geometric resolution photos (Ultracam D digital camera with ground sample distance of 10 cm and UltracamX digital camera with ground sample distance of 20 cm) from the same experimental area of the University Forest Enterprise Zvolen are described with the aim of finding an appropriate solution suitable for forest mapping. In both cases, the horizontal accuracy of the photogrammetric projects is presented. Finally, the process of true orthophoto generation and its utilization in forestry is the focus. Both experiments in this paper presented results which fulfil the accuracy standards defined by the state cadastre within the mapping of large scale maps. All projects, apart from the project of direct georeferencing, fulfilled the third accuracy class of mapping, so they can be used within cadastral mapping, land consolidations and, of course, within forested land mapping. Still, all the projects meet the accuracy requirements within the forest mapping standard, where the forestry features and forest spatial distribution units are mapped.
48
Ruzgienė, Birutė, Česlovas Aksamitauskas, Ignas Daugėla, Šarūnas Prokopimas, Virgaudas Puodžiukas, and Donatas Rekus. "UAV photogrammetry for road surface modelling." Baltic Journal of Road and Bridge Engineering 10, no. 2 (June 25, 2015): 151–58. http://dx.doi.org/10.3846/bjrbe.2015.19.
Full textAbstract:
Recently, the interest of Unmanned Aerial Vehicle application in photogrammetric environment for roads observation and monitoring has increased in many countries, in Lithuania as well. The experimental object for demonstration of capability and efficiency of aerial vehicle-based remote sensing technology for road data collection was a western bypass of Vilnius. The platform of the model UX5 Trimble with mounted camera Sony NEX-5R was applied for gaining images. The implemented means are mobile and not expensive. Photogrammetric technique with software package Business Center Photogrammetry Module was applied for the modelling of images. The correctness of digital surface model generally depends on camera resolution, flight height and accuracy of ground control points. The coordinates of control points were determined using Global Positioning System Trimble R4. Paper demonstrates results of a new technology application possibilities for linear object (road) mapping and accuracy evaluation of spatial models. The road points positioning accuracy investigation was carried out in consideration with geodetic control measurements. The average root mean square error for the points coordinates is 2.94 cm, and standard deviations – 2.78 cm. Analyzing coincidence or mismatches of Vilnius western bypass project data with photogrammetric product, not significant discrepancies of road section features were determined. The cost consideration of Unmanned Aerial Vehicle in conjunction with photogrammetry employment at experimental object is presented.
49
Aparicio Resco, Pablo, Juan D. Carmona Barrero, Miguel Fernández Díaz, and Pere M. Martín Serrano. "“Fotogrametría Involuntaria”: rescatando información geométrica en 3D de fotografías de archivo." Virtual Archaeology Review 5, no. 10 (May 2, 2014): 11. http://dx.doi.org/10.4995/var.2014.4205.
Full textAbstract:
Nowadays digital photogrammetry has become one of the most efficient techniques for Heritage documentation. The creation of three-dimensional models from images taken with digital cameras is the usual procedure. The aim of this paper is showing the results obtained by photogrammetric analysis of library pictures, taken mainly in archaeological excavations, to recover three-dimensional information that maybe latent, although the shots had not been made with the purpose of creating 3D models. In this way we have generated three-dimensional models in which can be recovered geometric data that were not reflected in the drawings or photographs made during fieldwork.
50
Nakada, Ryuji, Masanori Takigawa, Tomowo Ohga, and Noritsuna Fujii. "VERIFICATION OF POTENCY OF AERIAL DIGITAL OBLIQUE CAMERAS FOR AERIAL PHOTOGRAMMETRY IN JAPAN." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B1 (June 2, 2016): 63–68. http://dx.doi.org/10.5194/isprs-archives-xli-b1-63-2016.
Full textAbstract:
Digital oblique aerial camera (hereinafter called “oblique cameras”) is an assembly of medium format digital cameras capable of shooting digital aerial photographs in five directions i.e. nadir view and oblique views (forward and backward, left and right views) simultaneously and it is used for shooting digital aerial photographs efficiently for generating 3D models in a wide area. <br><br> For aerial photogrammetry of public survey in Japan, it is required to use large format cameras, like DMC and UltraCam series, to ensure aerial photogrammetric accuracy. <br><br> Although oblique cameras are intended to generate 3D models, digital aerial photographs in 5 directions taken with them should not be limited to 3D model production but they may also be allowed for digital mapping and photomaps of required public survey accuracy in Japan. <br><br> In order to verify the potency of using oblique cameras for aerial photogrammetry (simultaneous adjustment, digital mapping and photomaps), (1) a viewer was developed to interpret digital aerial photographs taken with oblique cameras, (2) digital aerial photographs were shot with an oblique camera owned by us, a Penta DigiCAM of IGI mbH, and (3) accuracy of 3D measurements was verified.