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Journal articles on the topic 'Photogrammetry'
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1
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.
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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
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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.
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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.
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Zheng, S. Y., L. Gui, X. N. Wang, and D. Ma. "A real-time photogrammetry system based on embedded architecture." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-5 (June 6, 2014): 633–38. http://dx.doi.org/10.5194/isprsarchives-xl-5-633-2014.
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In order to meet the demand of real-time spatial data processing and improve the online processing capability of photogrammetric system, a kind of real-time photogrammetry method is proposed in this paper. According to the proposed method, system based on embedded architecture is then designed: using FPGA, ARM+DSP and other embedded computing technology to build specialized hardware operating environment, transplanting and optimizing the existing photogrammetric algorithm to the embedded system, and finally real-time photogrammetric data processing is realized. At last, aerial photogrammetric experiment shows that the method can achieve high-speed and stable on-line processing of photogrammetric data. And the experiment also verifies the feasibility of the proposed real-time photogrammetric system based on embedded architecture. It is the first time to realize real-time aerial photogrammetric system, which can improve the online processing efficiency of photogrammetry to a higher level and broaden the application field of photogrammetry.
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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.
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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.
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Hou, Wenchao. "Inclined photogrammetry data lightweighting techniques." Theoretical and Natural Science 9, no. 1 (November 13, 2023): 100–105. http://dx.doi.org/10.54254/2753-8818/9/20240724.
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Since contemporary information-retrieval systems rely heavily on the content of titles and abstracts to identify relevant articles in literature searches, great care should be taken in constructing both. Inclined photogrammetry is an emerging surveying and mapping technology with the advantages of real 3D and multi-view angle, but the huge amount of inclined photogrammetry data makes the application scenarios limited, which leads to the high cost of acquiring inclined photogrammetry data. To address this problem, the lightweighting technology of inclined photogrammetric data is studied. Firstly, the characteristics of inclined photogrammetric data are analysed, the key technology of lightweighting inclined photogrammetric data is studied, and the compression algorithm based on the improved triangular mesh model and the compression algorithm based on the regional chunking model are proposed, which solves the problem of the large volume of inclined photogrammetric data and the inconvenience of using it. The experimental results in small-scale mapping show that the lightweighting of inclined photogrammetric data can be effectively achieved based on the improved triangular mesh model compression algorithm and the regional chunking model compression algorithm, and the optimised combination of the improved triangular mesh model compression algorithm and the regional chunking model compression algorithm can effectively achieve the lightweighting of inclined photogrammetric data.
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Qureshi, A. H., W. S. Alaloul, A. Murtiyoso, S. Saad, and B. Manzoor. "COMPARISON OF PHOTOGRAMMETRY TOOLS CONSIDERING REBAR PROGRESS RECOGNITION." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B2-2022 (May 30, 2022): 141–46. http://dx.doi.org/10.5194/isprs-archives-xliii-b2-2022-141-2022.
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Abstract. Construction progress monitoring is an important process throughout the project timeline towards its successful completion. Among imaging techniques, photogrammetry is considered as economical and effective method. However, few studies can be found on construction progress monitoring via photogrammetry; thus, not much guideline is available for this domain. This study evaluated the photogrammetry tools for the progress assessment of the rebar grid framework. Photogrammetry tools were evaluated and analysed following defined criteria, and Agisoft Metashape, and 3DF Zephyr were identified as better options. This study aims to provide a guideline to construction industry professionals and stakeholders towards the adoption of photogrammetric progress assessment for construction activities.
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Patonis, Photis. "A Comparative Study on the Use of Smartphone Cameras in Photogrammetry Applications." Sensors 24, no. 22 (November 15, 2024): 7311. http://dx.doi.org/10.3390/s24227311.
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The evaluation of smartphone camera technology for close-range photogrammetry includes assessing captured photos for 3D measurement. In this work, experiments are conducted on many smartphones to study distortion levels and accuracy performance in close-range photogrammetry applications. Analytical methods and specialized digital tools are employed to evaluate the results. OpenCV functions estimate the distortions introduced by the lens. Diagrams, evaluation images, statistical quantities, and indicators are utilized to compare the results among sensors. The accuracy achieved in photogrammetry is examined using the photogrammetric bundle adjustment in a real-world application. In the end, generalized conclusions are drawn regarding this technology’s use in close-range photogrammetry applications.
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Alsadik, B., and N. A. Abdulateef. "EPIPOLAR GEOMETRY BETWEEN PHOTOGRAMMETRY AND COMPUTER VISION – A COMPUTATIONAL GUIDE." ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences V-5-2022 (May 18, 2022): 25–32. http://dx.doi.org/10.5194/isprs-annals-v-5-2022-25-2022.
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Abstract. Stereo image orientation is one of the major topics in computer vision, photogrammetry, and robotics. The stereo vision problem solution represents the basic element of the multi-view Structure from Motion SfM in computer vision and photogrammetry.A successfully reconstructed stereo image geometry is based on solving the epipolar constraint using the fundamental matrix which is based on the projective geometry in computer vision. However, in photogrammetry, the problem is well known as relative orientation and there is a different solution that is based on the euclidean geometry using collinearity or coplanarity equations.A lot of literature and discussions were found in the last decades to solve the epipolar geometry problem. However, there is still no clear description to compare between solutions introduced using both projective and euclidean solutions and which method of the relative image orientation is mostly preferred.To the best of our knowledge, computing and plotting the epipolar lines using photogrammetric collinearity and coplanarity equations is not shown before in the educational litrature. In this paper, a detailed mathematical solution of the epipolar geometry will be shown using both photogrammetric and computer vision techniques. This is aimed to remove any confusion for new learners in using the current methods in both scientific fields and show that using any technique should lead to comparable results with advantages and disadvantages.
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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.
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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.
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Pojda, Dariusz, Agnieszka Anna Tomaka, Leszek Luchowski, and Michał Tarnawski. "Integration and Application of Multimodal Measurement Techniques: Relevance of Photogrammetry to Orthodontics." Sensors 21, no. 23 (December 1, 2021): 8026. http://dx.doi.org/10.3390/s21238026.
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Multimodal imaging, including 3D modalities, is increasingly being applied in orthodontics, both as a diagnostic tool and especially for the design of intraoral appliances, where geometric accuracy is very important. Laser scanners and other precision 3D-imaging devices are expensive and cumbersome, which limits their use in medical practice. Photogrammetry, using ordinary 2D photographs or video recordings to create 3D imagery, offers a cheaper and more convenient alternative, replacing the specialised equipment with handy consumer cameras. The present study addresses the question of to what extent, and under what conditions, this technique can be an adequate replacement for the 3D scanner. The accuracy of simple surface reconstruction and of model embedding achieved with photogrammetry was verified against that obtained with a triangulating laser scanner. To roughly evaluate the impact of image imperfections on photogrammetric reconstruction, the photographs for photogrammetry were taken under various lighting conditions and were used either raw or with a blur-simulating defocus. Video footage was also tested as another 2D-imaging modality feeding data into photogrammetry. The results show the significant potential of photogrammetric techniques.
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Jacobsen, L. R., and P. N. Biondo. "A New Shipbuilding Measurement Tool—Photogrammetry for Measuring Circularity of Submarine Hulls." Journal of Ship Production 2, no. 02 (May 1, 1986): 80–89. http://dx.doi.org/10.5957/jsp.1986.2.2.80.
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Photogrammetry is the art, science, and technology used in the interpretation of coordinate data about physical objects by the measurement and analysis of photographic images. This paper is concerned with the use of photogrammetry to measure the as-built circularity (out-of-roundness) of the Trident Class submarine pressure hull cylinders Various other mechanical methods have been used in the past for measuring hull circularities, but the unique features and capabilities of photogrammetry have proved themselves well in meeting demanding shipyard needs. The large, awkward shape of submarine pressure hull cylinders, m combination with the flexibility and ease of the use of the photogrammetric technique, makes photogrammetry a productive tool in support of submarine construction.
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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.
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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.
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Zhao, Chengli, Chenyang Fan, and Zhangyan Zhao. "Optimization Method of Square Hole Measurement Based on Generalized Point Photogrammetry." Applied Sciences 13, no. 10 (May 22, 2023): 6320. http://dx.doi.org/10.3390/app13106320.
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The theory of generalized point photogrammetry extends the traditional point-based photogrammetry to line-based photogrammetry, expanding the application scope of photogrammetry in engineering. In order to solve the problem of accurate positioning between the square rod and the square hole in the current project, the position of the square hole should be accurately measured first. For this purpose, an optimization method of square hole measurement based on generalized point photogrammetry is proposed. This method first uses the traditional photogrammetric method to calculate the initial coordinates of the four points of the square hole and extract the four line segments on the image. The error equation based on generalized photogrammetry is constructed by the constraint conditions between the four spatial points, and the iterative calculation is carried out until the error is less than the threshold or the iteration number is reached. The reliability of the method is verified by numerical simulation experiments and engineering experiments. The experimental results show that the method can effectively improve the measurement accuracy and can rapidly converge. The method has high engineering application value.
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Kushwaha, S. K. P., M. Mokros, and K. Jain. "ENRICHMENT OF UAV PHOTOGRAMMETRIC POINT CLOUD TO ENHANCE DSM IN A DENSE URBAN REGION." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-4/W4-2022 (October 14, 2022): 83–88. http://dx.doi.org/10.5194/isprs-archives-xlviii-4-w4-2022-83-2022.
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Abstract. Unmanned Arial Vehicle (UAV) have become very cost effective and time efficient technology for surveying, mapping and various other geospatial applications. UAV serves as a platform but the main dependency also lies on which type of the sensor is integrated on it. Optical photogrammetric surveys are more often conducted for generalized purposes and for its advantages. UAV photogrammetry have become very useful tool in creation of 3D city model or Digital twin model. But creating a Digital Surface Model (DSM) through photogrammetry is not that efficient when it comes to very dense urban regions. In this research, the quality of DSM, Noise in the Photogrammetric point cloud are studied, then an experimental approach is tried to enhance the DSM than that of DSM obtained from photogrammetric processing software. From the results, it is observed that the quality of DSM is enhanced in narrow streets/roads, near trees, regions between trees and buildings, regions near building and road, etc. This approach can be utilized for low-cost UAV photogrammetry for accurate 3D modelling of the narrow streets or roads are of critical importance.
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Gunn, Michael J., and Ronald S. Hicks. "Industrial Photogrammetry—Its Application to Shipbuilding." Marine Technology and SNAME News 25, no. 03 (July 1, 1988): 229–36. http://dx.doi.org/10.5957/mt1.1988.25.3.229.
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Photogrammetry is the science of acquiring and interpreting three-dimensional data of physical objects by measuring and analyzing their images on photographic plates. The development of this technology since the mid-seventies has increased its credibility for application to industrial and shipbuilding use. Analytical photogrammetry is now routinely employed in shipbuilding for tasks as diverse as predicting the fit-up of structural steel assemblies prior to their joining, verifying the circularity of submarine hulls, and checking the alignment of catapult trough components on aircraft carriers. The authors address the practical applications of photogrammetric technology, and identify the reliability, versatility, and productivity of photogrammetric surveying when applied to shipbuilding.
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Wilken, Rowan, and Julian Thomas. "Vertical geomediation: The automation and platformization of photogrammetry." New Media & Society 24, no. 11 (October 7, 2022): 2531–47. http://dx.doi.org/10.1177/14614448221122214.
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Photogrammetry is the science of using photographs to make measurements and derive three-dimensional (3D) data about objects or terrain from two-dimensional (2D) imaging. In this article we view photogrammetry through the lens of geomedia studies, arguing two things. First, we suggest the accumulation and concentration of photogrammetric capabilities, technologies and knowledge, from the First World War onwards can be understood as both part of the 20th-century creation of a ‘government machine’, and a crucial element within the longer-run ‘cartographic project’. Through both world wars and the post-war period, aerial photogrammetry emerged as a fundamental capability for government-supported geomedia infrastructure and spatial information capture – what we term an extended geomedia infosphere. Second, we examine the critical dynamics of digitization, automation and platformization. These developments, we argue, have led to a redistribution of photogrammetric capabilities and technologies outside governmental cartography, with implications for platforms and geomedia studies.
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Hu, Lechen, and Yansong Duan. "Research on Photogrammetric Processing Methods for Unmanned Aerial Vehicle Imagery in Antarctica." International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLVIII-2/W8-2024 (December 14, 2024): 193–200. https://doi.org/10.5194/isprs-archives-xlviii-2-w8-2024-193-2024.
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Abstract. Antarctica, abundant in resources and of exceptional scientific value, is a focus of research. Unmanned aerial vehicle (UAV) photogrammetry, as a low-cost and efficient method for geographic information acquisition, plays an important role in Antarctic studies. However, due to the unique conditions of Antarctica, conventional UAV photogrammetry processing methods are inadequate, and relevant research in this area is limited. This paper uses a photogrammetric coordinate system for the Antarctic environment and derives the conversion formulas between geodetic coordinates and the coordinates. This paper also discusses methods for image matching to accelerate image retrieval speed and improve retrieval efficiency in the harsh natural conditions in Antarctica. The results of photogrammetric production using real data confirm that the proposed planar coordinate system is suitable for Antarctic image processing, and the proposed retrieval method effectively addresses the challenges in Antarctic image matching. This provides valuable insights for UAV photogrammetry research in Antarctica.
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Zawieska, Dorota, and Zdzisław Kurczyński. "Photogrammetry at the Warsaw University of Technology – Past and Present." Reports on Geodesy and Geoinformatics 100, no. 1 (June 1, 2016): 221–34. http://dx.doi.org/10.1515/rgg-2016-0015.
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Abstract The Department of Photogrammetry, Remote Sensing and Geographic Information Systems at the Warsaw University of Technology is one of six organizational units of the Faculty of Geodesy and Cartography. The photogrammetry has been under interest of scientists in Faculty for over 90 years. The last decades has been characterized by the incredible development of photogrammetric technologies, mainly towards wide automation and popularization of derivative products for processing data acquired at satellite, aerial, and terrestrial levels. The paper presents achievements of scientists employed in Photogrammetric Research Group during last decades related to projects that were carried out in this department.
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Meng, Junzhen, Yabing Xuan, and Guiping Huang. "Optical Target Projector: Principle of Functioning and Basic Performance Test." Sensors 24, no. 17 (September 3, 2024): 5728. http://dx.doi.org/10.3390/s24175728.
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Faced with measurement conditions such as high-temperature forging, strict prohibition of surface contamination, and toxic environments, using the projection point of an optical target projector (referred to as an “optical projector”) as a photogrammetric target has become a necessary method of high-precision industrial photogrammetry. In connection with the current industrial demand, we have analyzed the principles of optical projectors and introduced their optical characteristics and advantages in the field of industrial photogrammetry. On this basis, a series of tests such as brightness, roundness, and so on were conducted to determine the basic properties of the optical projector. A set of performance test methods including inner coincidence accuracy and outer coincidence accuracy were proposed; the tests included industrial photogrammetry system measurement repeatability, surface measurement precision, and a comparison test with laser tracker. The test conditions used optical projection points as the photogrammetry targets. The test results showed that the coordinate measurement repeatability of the industrial photogrammetry system is 0.010 mm, and the surface measurement precision is 0.007 mm under the condition of a single optical projector station, with little difference between the results under the condition of pasting retro-reflective targets. In the process of the comparison test with laser tracker, the image quality of the black measurement object obtained is obviously inferior to other surfaces, so the analysis of the point projector is greatly affected by the color of the measured object and other conditions, which provides a reference for the measurement object and application range of the industrial photogrammetric system based on optical targets. The results demonstrate the applicability and reliability of using the optical projection point of an optical projector as target points for photogrammetry.
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H, Ragg,. "3D Image Vector - Terrestrial photogrammetry without ground control points 3D ImageVector - Terres- trische Photogrammetrie ohne Passpunkte." GIS Business 11, no. 6 (December 14, 2016): 30–31. http://dx.doi.org/10.26643/gis.v11i6.5212.
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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.
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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.
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AKERMAN, Oleksandr, and Nadia BEDRINA. "THE APPLICATION OF PHOTOGRAMMETRY IN AUDIO-VISUAL ART (ON THE EXAMPLE OF THE EDUCATIONAL PROFESSIONAL PROGRAM “ADVERTISING AND VIDEO ART” AT KSADA)." HUDPROM: The Ukrainian Art and Design Journal 2023, no. 2 (October 15, 2023): 108–14. http://dx.doi.org/10.33625/hudprom2023.02.108.
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Over the past few years, photogrammetry has attracted the attention of researchers worldwide in different aspects and branches of science. Ecological issues and environmental changes update research related to the digitisation and preservation of cultural heritage and museum exhibitions. Photogrammetric methods also find their place in video production – creating virtual doubles of people, buildings, or landscapes. This article brings up the question of the use of photogrammetric methods in the educational process at the educational professional program “Advertising and video Art” specialty 021 Audio-visual Art of the first degree of higher education at KSADA. Selected and detailed knowledge and skills obtained as a result of studying mandatory educational components (processing of static images, photography theory, work with video editors, compositing programs, colour theory, colour correction, grading, theory and practice of 3D modelling programs), which contribute to the study of the discipline of choice “Fundamentals of photogrammetry”. Following the analysis, the technology to create a photogrammetric project is considered step by step, the steps of this process are outlined and described, namely: the shooting process, processing of the captured material, creating a cloud of points, polygonization of the three-dimensional model, retopology of the model, texturing and texture baking. The main fields of application of the photogrammetry method in audio-visual art are identified: “practical” photogrammetry (digital conservation of architectural and sculpture monuments, copy of museum exhibitions); construction of models for further use in the production of films and videos; using photogrammetric models as objects of artistic creativity, including advertising; the use of unusual textures, perspectives, physical processes that cannot be implemented in the real world; creating large-scale copies of historic buildings and 3D printing sculptures.
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Belmonte, A. A., M. M. P. Biong, and E. G. Macatulad. "DEM GENERATION FROM CLOSE-RANGE PHOTOGRAMMETRY USING EXTENDED PYTHON PHOTOGRAMMETRY TOOLBOX." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W5 (October 5, 2017): 11–19. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w5-11-2017.
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Digital elevation models (DEMs) are widely used raster data for different applications concerning terrain, such as for flood modelling, viewshed analysis, mining, land development, engineering design projects, to name a few. DEMs can be obtained through various methods, including topographic survey, LiDAR or photogrammetry, and internet sources. Terrestrial close-range photogrammetry is one of the alternative methods to produce DEMs through the processing of images using photogrammetry software. There are already powerful photogrammetry software that are commercially-available and can produce high-accuracy DEMs. However, this entails corresponding cost. Although, some of these software have free or demo trials, these trials have limits in their usable features and usage time. One alternative is the use of free and open-source software (FOSS), such as the Python Photogrammetry Toolbox (PPT), which provides an interface for performing photogrammetric processes implemented through python script. For relatively small areas such as in mining or construction excavation, a relatively inexpensive, fast and accurate method would be advantageous. In this study, PPT was used to generate 3D point cloud data from images of an open pit excavation. The PPT was extended to add an algorithm converting the generated point cloud data into a usable DEM.
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He, Hai Qing, and Peng Gen Cheng. "Robust and Efficient Solution to Absolute Orientation in Low-Altitude Photogrammetry." Applied Mechanics and Materials 631-632 (September 2014): 456–61. http://dx.doi.org/10.4028/www.scientific.net/amm.631-632.456.
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Absolute orientation is a classic photogrammetric task for recovering the transformation relationship between two coordinate systems. In low-altitude photogrammetric field, arbitrary coordinate system in the network of aerial triangulation is spatial auxiliary coordinate system, which is quite different from ground photogrammetric coordinate. So the commonly used solution to absolute orientation with simplified parameters is unsuitable for low-altitude photogrammetry. In this paper, a novel solution of absolute orientation is proposed, the initial parameters of absolute orientation can be solved by the formula using centroids of coordinates instead of simplified parameters, then the parameters of absolute orientation are iteratively refined by Levenberg-Marquardt algorithm. Experimental results show that the solution is effective and practical. It may be suitable to implement absolute orientation in low-altitude photogrammetry.
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Perttola, Wesa, Petri Rönnholm, and Björn Forsén. "The hands-on learning of practical photogrammetry for archaeology." Photogrammetric Journal of Finland 28, no. 2 (2023): 1–12. http://dx.doi.org/10.17690/023282.1.
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Photogrammetric techniques have been applied in archaeology for over 140 years, but recently, automation in software has significantly increased the popularity of photogrammetry. In 2018, the Master’s Programme in Cultural Heritage at Helsinki University arranged a special intensive hands-on course on geodesy, photogrammetry and laser scanning in Greece in order to provide more in-depth practical skills to students in an inspiring environment. The course was established in co-operation with Aalto University and the Finnish Institute at Athens. In this article, we describe how practical photogrammetry can be learned on an intensive hands-on course. Hands-on experiences and experimental learning enable good practical skills and also a deeper connection and understanding of theory. We believe that the students on the course managed to add photogrammetry to their archaeological toolboxes for the rest of their careers.
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Marín-Buzón, Carmen, Antonio Pérez-Romero, José Luis López-Castro, Imed Ben Jerbania, and Francisco Manzano-Agugliaro. "Photogrammetry as a New Scientific Tool in Archaeology: Worldwide Research Trends." Sustainability 13, no. 9 (May 10, 2021): 5319. http://dx.doi.org/10.3390/su13095319.
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Archaeology has made significant advances in the last 20 years. This can be seen by the remarkable increase in specialised literature on all archaeology-related disciplines. These advances have made it a science with links to many other sciences, both in the field of experimental sciences and in the use of techniques from other disciplines such as engineering. Within this last issue it is important to highlight the great advance that the use of photogrammetry has brought for archaeology. In this research, through a systematic study with bibliometric techniques, the main institutions and countries that are carrying them out and the main interests of the scientific community in archaeology related to photogrammetry have been identified. The main increase in this field has been observed since 2010, especially the contribution of UAVs that have reduced the cost of photogrammetric flights for reduced areas. The main lines of research in photogrammetry applied to archaeology are close-range photogrammetry, aerial photogrammetry (UAV), cultural heritage, excavation, cameras, GPS, laser scan, and virtual reconstruction including 3D printing.
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Feng, C., D. Yu, Y. Liang, D. Guo, Q. Wang, and X. Cui. "ASSESSMENT OF INFLUENCE OF IMAGE PROCESSING ON FULLY AUTOMATIC UAV PHOTOGRAMMETRY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W13 (June 4, 2019): 269–75. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w13-269-2019.
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<p><strong>Abstract.</strong> Nowadays UAVs have been widely used for large scale surveying and mapping. Compared with traditional surveying techniques, UAV photogrammetry is more convenient, cost-effective, and responsive. Aerial images, Position and Orientation System (POS) observations and coordinates of ground control points are usually acquired during a surveying campaign. Aerial images are the data source of feature point extraction, dense matching and ortho-rectification procedures. The quality of the images is one of the most important factors that influence the accuracy and efficiency of UAV photogrammetry. Image processing techniques including image enhancement, image downsampling and image compression are usually used to improve the image quality as well as the efficiency and effectiveness of the photogrammetric data processing. However, all of these image processing techniques bring in uncertainties to the UAV photogrammetry. In this work, the influences of the aforementioned image processing techniques on the accuracy of the automatic UAV photogrammetry are investigated. The automatic photogrammetric data processing mainly consists of image matching, relative orientation, absolute orientation, dense matching, DSM interpolation and orthomosaicing. The results of the experiments show that the influences of the image processing techniques on the accuracy of automatic UAV photogrammetry are insignificant. The image orientation and surface reconstruction accuracies of the original and the enhanced images are comparable. The feature points extraction and image matching procedures are greatly influenced by image downsampling. The accuracies of the image orientations are not influenced by image downsampling and image compression at all.</p>
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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.
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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.
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Shults, R. "DEVELOPMENT AND IMPLEMENTATION OF INNOVATIVE EDUCATIONAL MODULES ON ARCHITECTURAL PHOTOGRAMMETRY FOR BACHELOR’S DEGREE CURRICULA IN ARCHITECTURE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-5/W3 (December 5, 2019): 115–20. http://dx.doi.org/10.5194/isprs-archives-xlii-5-w3-115-2019.
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Abstract. Modern specialists in the field of architecture work exclusively in three-dimensional space. At the same time, their training completely ignores the state-of-the-art technologies associated with obtaining three-dimensional models of engineering structures. In such circumstances, the connections between the three key participants in the design and construction of engineering structures, namely architects, builders, and surveyors are broken. The main technology that allows obtaining three-dimensional models is photogrammetry. The purpose of the presented article is to determine the subject matter of close-range photogrammetry in solving architectural design problems. Based on certain architectural tasks, educational modules for the discipline of architectural photogrammetry of the bachelor educational level were developed. The peculiarity of the proposed program is that it is designed in such a way that it allows using the whole complex of the modern achievements in the field of automated image processing and the specifics of setting and solving architectural problems. At the same time, this program covers such modern technologies and concepts as UAV photogrammetry, digital photogrammetry, photogrammetric scanning, BIM, GIS, etc. Such an approach allows students without problems to learn several special knowledge, which is owned by surveyors and photogrammetrists. The approximate content of the course of architectural photogrammetry for bachelor students is presented.
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Maimaitijiang, M., V. Sagan, H. Erkbol, J. Adrian, M. Newcomb, D. LeBauer, D. Pauli, N. Shakoor, and T. C. Mockler. "UAV-BASED SORGHUM GROWTH MONITORING: A COMPARATIVE ANALYSIS OF LIDAR AND PHOTOGRAMMETRY." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences V-3-2020 (August 3, 2020): 489–96. http://dx.doi.org/10.5194/isprs-annals-v-3-2020-489-2020.
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Abstract. Canopy height (CH) and leaf area index (LAI) provide key information about crop growth and productivity. A rapid and accurate retrieval of CH and LAI is critical for a variety of agricultural applications. LiDAR and RGB photogrammetry have been increasingly used in plant phenotyping in recent years thanks to the developments in Unmanned Aerial Vehicle (UAV) and sensor technology. The goal of this study is to investigate the potential of UAV LiDAR and RGB photogrammetry in estimating crop CH and LAI. To this end, a high resolution 32 channel LiDAR and RGB cameras mounted on DJI Matrice 600 Pro UAV were employed to collect data at sorghum fields near Maricopa, Arizona, USA. A series of canopy structure metrics were extracted using LiDAR and RGB photogrammetry-based point clouds. Random Forest Regression (RFR) models were established based on the UAV-LiDAR and photogrammetry-derived metrics and field-measured LAI. The results show that both UAV-LiDAR and RGB photogrammetry demonstrated promising accuracies in CH extraction and LAI estimation. Overall, UAV-LiDAR yielded superior performance than RGB photogrammetry in both low and high canopy density sorghum fields. In addition, Pearson’s correlation coefficient, as well as RFR-based variable importance analysis demonstrated that height-based metrics from both LiDAR and photogrammetric point clouds were more useful than density-based metrics in LAI estimation. This study proved that UAV-based LiDAR and photogrammetry are important tool in sustainable field management and high-throughput phenotyping, but LiDAR is more accurate than RGB photogrammetry due to its greater canopy penetration capability.
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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.
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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.
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Wallace, Colin Allan Bruce. "Retrospective Photogrammetry in Greek Archaeology." Studies in Digital Heritage 1, no. 2 (December 14, 2017): 607–26. http://dx.doi.org/10.14434/sdh.v1i2.23251.
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This paper addresses the advantages as well as the obstacles in practicing photogrammetry based on archival photos of archaeological sites and examines how the results can be put to use for further research, preservation, restoration and monitoring rates of deterioration. While the extensive use of historic aerial photographs has been applied to photogrammetric modeling, archaeological excavation archives have been largely ignored. Historically archaeological excavations have been vigorously documented photographically and many of these photographs are available in archives. Not all photo archives are suitable for photogrammetry as they were not photographed with the intention of overlap and other photogrammetric qualities. By selectively choosing photographs with common points and manipulating exposures, cropping and other properties to enhance commonality, 3D models of past structures and excavations can allow us to revisit them, produce accurate measurements and view angles that were never photographed. Some sites are still available for modern comparison and surveying, allowing us to quantitatively compare conditions at the time of excavation with the current state of those sites. Given the right treatment, retrospective photogrammetry will have impacts in the preservation, restoration and monitoring of the deterioration of archaeological sites. Examples from the Athenian Agora: the state prison and Omega House, and Ancient Corinth: the Fountain of the Lamps, will be used to demonstrate these possibilities.
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Tournadre, V., M. Pierrot-Deseilligny, and P. H. Faure. "UAV LINEAR PHOTOGRAMMETRY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-3/W3 (August 19, 2015): 327–33. http://dx.doi.org/10.5194/isprsarchives-xl-3-w3-327-2015.
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The photogrammetric treatment of images acquired on a linear axis is a problematic case. Such tricky configurations often leads to bended 3D models, described as a bowl effect, which requires ground measurements to be fixed. This article presents different solutions to overcome that problem. All solutions have been implemented into the free open-source photogrammetric suite MicMac. The article presents the lasts evolutions of MicMac's bundle adjustment core, as well as some extended calibration models and how they fit for the camera evaluated. The acquisition process is optimized by presenting how oblique images can improve the accuracy of the orientations, while the 3D models accuracies are assessed by producing a millimeter accurate ground truth from terrestrial photogrammetry.
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Altuntas, C., S. Mert, G. Yaman, Y. Cengiz, and M. Sonmez. "PHOTOGRAMMETRIC WIREFRAME AND DENSE POINT CLOUD 3D MODELLING OF HISTORICAL STRUCTURES: THE STUDY OF SULTAN SELIM MOSQUE AND YUSUF AGA LIBRARY IN KONYA, TURKEY." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W11 (May 4, 2019): 77–82. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w11-77-2019.
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<p><strong>Abstract.</strong> The photogrammetry enables to getting high accuracy measurement with low-cost and easy application in documentation of historical structures. The object details are signified with lines in cultural heritage documentation by photogrammetry. The combination of all the lines create 3D wireframe model of the measurement object. In addition, patch surfaces of the wireframe are mapped with the texture from the images for more realistic visualization. On the other hand, the progress on computer vision and image processing techniques is allowing automatically perform the photogrammetric process. A large number of points that are called dense point cloud can be measured from coverage area of multi view images. The dense point cloud represents the object shape with small space measured points while the wireframe photogrammetry is representing the object with lines. In this study these two photogrammetric methods were evaluated with respect to visualization, cost, labour and measurement time through 3D modelling of historical structures of Sultan Selim Mosque and Yusuf Aga Library.</p>
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Thyer*, N. H., J. A. R. Blais, and M. A. Chapman. "Integration of an inertial system with high-altitude photogrammetry over rugged terrain." CISM journal 43, no. 1 (April 1989): 9–19. http://dx.doi.org/10.1139/geomat-1989-0001.
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In aerial photogrammetry, information on camera position and orientation from auxiliary systems can be used to supplement or replace ground control information when the latter is inadequate. High-altiude aerial photography has experimentally been combined with inertial measurement of camera position and orientation over the Rocky Mountains west of Calgary. The inertial system output was compared with corresponding values from various photogrammetric adjustments for analysis purposes. In this experiment, it was found that the absolute position coordinates and orientation angles, as given by the inertial system without updates, were unsatisfactory. However, the changes in these quantities between consecutive stations agreed with the photogrammetry to a degree at least as close as the reliability of the photogrammetry itself, and even better agreement was obtained for rotation-invariant func-tions of these changes of position and orientation. Agreement was also improved by ignoring those perspective centers whose position coordinates gave the greatest residuals in the photogrammetric adjustment, indicating that inclusion of auxiliary information should improve the quality of the contribution of those images to the adjustment.
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Magnani, Matthew, Matthew Douglass, Whittaker Schroder, Jonathan Reeves, and David R. Braun. "The Digital Revolution to Come: Photogrammetry in Archaeological Practice." American Antiquity 85, no. 4 (August 13, 2020): 737–60. http://dx.doi.org/10.1017/aaq.2020.59.
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The three-dimensional (3D) revolution promised to transform archaeological practice. Of the technologies that contribute to the proliferation of 3D data, photogrammetry facilitates the rapid and inexpensive digitization of complex subjects in both field and lab settings. It finds additional use as a tool for public outreach, where it engages audiences ranging from source communities to artifact collectors. But what has photogrammetry's function been in advancing archaeological analysis? Drawing on our previous work, we review recent applications to understand the role of photogrammetry for contemporary archaeologists. Although photogrammetry is widely used as a visual aid, its analytical potential remains underdeveloped. Considering various scales of inquiry—graduating from objects to landscapes—we address how the technology fits within and expands existing documentation and data visualization routines, while evaluating the opportunity it presents for addressing archaeological questions and problems in innovative ways. We advance an agenda advocating that archaeologists move from proof-of-concept papers toward greater integration of photogrammetry with research.
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Creamer, Winifred, Jonathan Haas, and Thomas Mann. "Applying Photogrammetric Mapping: A Case Study from Northern New Mexico." American Antiquity 62, no. 2 (April 1997): 285–99. http://dx.doi.org/10.2307/282511.
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Photogrammetric mapping, the creation of detailed maps from aerial photographs, offers advantages to archaeologists that have not been fully utilized in recent years. Photogrammetry provides an efficient and cost-effective way to map extensive, complex sites. Common field problems such as obsolete equipment, unskilled staff, limited field time, and inhospitable field conditions are reduced accordingly. The usefulness of photogrammetry is demonstrated through work at the site of Pueblo Blanco, New Mexico, occupied ca. A.D. 1370-1525. A photogrammetric map was used to calculate total site size and the number of stories in each block of rooms. Further, the map supports an ongoing effort to stabilize the site and monitor the locality for looting and serves as a planning document for management of future uses.
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Razali, Ahmad Firdaus, Mohd Farid Mohd Ariff, and Zulkepli Majid. "POINT CLOUD REGISTRATION AND ACCURACY FOR 3D MODELLING - A REVIEW." Journal of Information System and Technology Management 6, no. 24 (December 1, 2021): 131–38. http://dx.doi.org/10.35631/jistm.624014.
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Geoinformation is a surveying and mapping field where topography and details on the ground are spatially mapped. The point cloud is one of the data types that is used for measurement and visualisation of Earth features mapping. Point cloud could come from a different source such as terrestrial laser scanned or photogrammetry. The concepts of terrestrial laser scanning and photogrammetry surveying are elaborated in this paper. This paper also presents the method used for point cloud registration; Iterative Closest Point (ICP) and Feature Extraction and Matching (FEM) and the accuracy of laser scanned, and photogrammetric point cloud based on the previous experiments. Experimental analysis conducted in the previous study shows an impressive result on laser scanned point cloud with very mínimum errors compared to photogrammetric point cloud.
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Ortiz Coder, Pedro. "Digitalización automática del patrimonio arqueológico a partir de fotogrametría." Virtual Archaeology Review 4, no. 8 (November 20, 2015): 46. http://dx.doi.org/10.4995/var.2013.4287.
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<p>New techniques in graphical heritage documentation have been improving recently. Modern photogrammetry and laser scanner constitute techniques with a good quality for those purposes. In this document, we will explain an easy photogrammetric method which permits to obtain accurate results. It is important to separate it from other methods based on computer vision with less accuracy. 4e photogrammetry solution is applied in this test through pictures taken from UAV (Unmanned Aerial Vehicles) and used on an archaeological site in Extremadura.</p>
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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.
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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.
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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.
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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.
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Jianming, Chen. "Map of the Mount Gongga Glacier: A Combination of Terrestrial and Aerial Photogrammetry." Annals of Glaciology 8 (1986): 34–36. http://dx.doi.org/10.3189/s0260305500001099.
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For use in glaciological research, between 1982 and 1984, we succeeded in surveying and mapping the Mount Gongga Glacier, on a scale of 1:25 000, by means of a combination of terrestrial and aerial photogrammetry. This paper describes the method in detail.In the survey area, we set up an independent, triangulation network, with microwave distance measurement, and two, independent, straight-line traverses, for basic control. Control points were observed by intersection. The terrestrial, photogrammetric baselines were projected and corrected into distances on the. plane of the map.Terrestrial photography accounted for the majority of the photographs of the survey area. Surveying and mapping of planimetrie and topographic features were completed on a stereo-autograph, using plates mainly from terrestrial photogrammetry. Where these data were insufficient, they were supplemented by aerial photography, plotted on a photographic plotting instrument. Orientation points of the aerial photographs were established by terrestrial, photogrammetric analysis and located on the map by an optical, mechanical method.The practical result showed that a combination of terrestrial and aerial photogrammetry, in mapping a high, mountain, glacier area, on a large scale, is more feasible and flexible than other methods and more economical as well.
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Postma, Martin, Marthán N. Bester, and P. J. Nico De Bruyn. "Spatial variation in female southern elephant seal mass change assessed by an accurate non-invasive photogrammetry method." Antarctic Science 25, no. 6 (April 10, 2013): 731–40. http://dx.doi.org/10.1017/s0954102013000059.
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AbstractPhysically weighing large marine mammals sequentially over time has presented researchers with a logistical challenge and has severely limited sample sizes. Using a well-established photogrammetry method we developed a simple mathematical method to calculate accurate mass measurements at specific stages in the life cycle of a top marine predator. Female southern elephant seals (n = 23) at Marion Island were sampled sequentially using photogrammetry and three-dimensional models (based on each photogrammetry project) were built for estimation of body mass. Simple equations were applied to obtain mass at critical instances in their life cycle. Marion Island elephant seal mass data was compared to data obtained from physically weighed elephant seals from King George, South Georgia and Macquarie islands. Females from Marion Island are smaller, but their percentage lactation mass loss is similar to females from these other populations. The similarity of percentage mass loss during lactation between different female populations illustrates the accuracy and practicality of the photogrammetric method over a temporal scale. Photogrammetric mass estimation can be used alongside datasets of physically weighed animals and can greatly benefit ecology and life history studies.
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Jianming, Chen. "Map of the Mount Gongga Glacier: A Combination of Terrestrial and Aerial Photogrammetry." Annals of Glaciology 8 (1986): 34–36. http://dx.doi.org/10.1017/s0260305500001099.
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For use in glaciological research, between 1982 and 1984, we succeeded in surveying and mapping the Mount Gongga Glacier, on a scale of 1:25 000, by means of a combination of terrestrial and aerial photogrammetry. This paper describes the method in detail. In the survey area, we set up an independent, triangulation network, with microwave distance measurement, and two, independent, straight-line traverses, for basic control. Control points were observed by intersection. The terrestrial, photogrammetric baselines were projected and corrected into distances on the. plane of the map. Terrestrial photography accounted for the majority of the photographs of the survey area. Surveying and mapping of planimetrie and topographic features were completed on a stereo-autograph, using plates mainly from terrestrial photogrammetry. Where these data were insufficient, they were supplemented by aerial photography, plotted on a photographic plotting instrument. Orientation points of the aerial photographs were established by terrestrial, photogrammetric analysis and located on the map by an optical, mechanical method. The practical result showed that a combination of terrestrial and aerial photogrammetry, in mapping a high, mountain, glacier area, on a large scale, is more feasible and flexible than other methods and more economical as well.
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Castillo, Jose C., Grace Gianneschi, Demyana Azer, Amornrut Manosudprasit, Arshan Haghi, Neetu Bansal, Veerasathpurush Allareddy, and Mohamed I. Masoud. "The relationship between 3D dentofacial photogrammetry measurements and traditional cephalometric measurements." Angle Orthodontist 89, no. 2 (November 5, 2018): 275–83. http://dx.doi.org/10.2319/120317-825.1.
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ABSTRACT Objectives: To determine the relationship between traditional cephalometric measurements and corresponding nonradiographic three-dimensional (3D) photogrammetry measurements. Materials and Methods: This was a cross-sectional study of 20 orthodontic patients (10 male and 10 female) who received lateral cephalometric radiographs and 3D dentofacial photogrammetric records with each subject serving as his or her own control for a total sample size of 40 images (20 per method). A 3D analysis that resembled a traditional cephalometric analysis was established using the eyes and natural head orientation as substitutes for the cranial base. Pearson correlation coefficients and multivariable linear regression plots were calculated to evaluate the relationship between the photogrammetry measurements and the cephalometric measurements. Results: The ANB angle, mandibular plane angle, lower anterior face height, upper incisor angle to SN, upper incisor angle to NA, and all measurements of lower incisor position and inclination had strong positive Pearson correlation coefficients with the corresponding 3D photogrammetry measurements (P < .004). Statistically significant regression plots demonstrated that cephalometric relationships between the jaws and incisor orientation can be predicted from corresponding 3D photogrammetry measurements. Conclusions: 3D photogrammetry measurements relating the jaws to each other and incisor orientation has a strong positive correlation with corresponding traditional cephalometric measurements and can serve as cephalometric predictors. Capturing the eyes using 3D photogrammetry can obviate the need to expose the cranial base and allow limiting the radiographic field to the area of interest.
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Paukkonen, Nikolai. "This is how we do it in the field: photogrammetry as a fieldwork documentation tool on a Finnish archaeological project in Greece." Photogrammetric Journal of Finland 29, no. 1 (2024): 1–15. http://dx.doi.org/10.17690/024291.1.
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Photogrammetric techniques have become commonplace in archaeology during the last two decades. During recent decades, the development of digital photography and the introduction of highly automated software with intuitive user interfaces has made 3D photogrammetry easily accessible for even the less-technologically adept fieldworkers. Archaeologists without special training in the technologies and theories behind photogrammetry can now produce accurate and visually impressive three-dimensional models of their research subjects. This article describes the measurement and documentation methodology used in an archaeological excavation project conducted in Photike, Greece, in 2021 by a Finnish-Greek cooperation. Photogrammetric modelling has been used in coordination with total stations in various contexts: in addition to documenting the uncovered architectural structures and remains, the method has also been applied to reproduce different stratigraphical phases of the excavation process, among other applications.
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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.
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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.
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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.
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<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>
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Roberts, John, Andrew Koeser, Amr Abd-Elrahman, Benjamin Wilkinson, Gail Hansen, Shawn Landry, and Ali Perez. "Mobile Terrestrial Photogrammetry for Street Tree Mapping and Measurements." Forests 10, no. 8 (August 19, 2019): 701. http://dx.doi.org/10.3390/f10080701.
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Urban forests are often heavily populated by street trees along right-of-ways (ROW), and monitoring efforts can enhance municipal tree management. Terrestrial photogrammetric techniques have been used to measure tree biometry, but have typically used images from various angles around individual trees or forest plots to capture the entire stem while also utilizing local coordinate systems (i.e., non-georeferenced data). We proposed the mobile collection of georeferenced imagery along 100 m sections of urban roadway to create photogrammetric point cloud datasets suitable for measuring stem diameters and attaining positional x and y coordinates of street trees. In a comparison between stationary and mobile photogrammetry, diameter measurements of urban street trees (N = 88) showed a slightly lower error (RMSE = 8.02%) relative to non-mobile stem measurements (RMSE = 10.37%). Tree Y-coordinates throughout urban sites for mobile photogrammetric data showed a lower standard deviation of 1.70 m relative to 2.38 m for a handheld GPS, which was similar for X-coordinates where photogrammetry and handheld GPS coordinates showed standard deviations of 1.59 m and the handheld GPS 2.36 m, respectively—suggesting higher precision for the mobile photogrammetric models. The mobile photogrammetric system used in this study to create georeferenced models for measuring stem diameters and mapping tree positions can also be potentially expanded for more wide-scale applications related to tree inventory and monitoring of roadside infrastructure.
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Brown, Chris Darley. "Photogrammetry." Performance Research 2, no. 3 (January 1997): 17–24. http://dx.doi.org/10.1080/13528165.1997.10871564.
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