Relevant bibliographies by topics / Digitale Photogrammetrie

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Digitale Photogrammetrie'

Author: Grafiati
Published: 4 June 2021
Last updated: 5 February 2022

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Journal articles on the topic "Digitale Photogrammetrie"

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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.

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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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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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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.

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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.
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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.

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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).
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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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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.

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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.
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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.

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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.
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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.

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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.
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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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Dissertations / Theses on the topic "Digitale Photogrammetrie"

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Hampel, Uwe. "Photogrammetrische Erfassung der Verformungs- und Rissentwicklung bei baumechanischen Untersuchungen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1213691909563-21395.

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Verfahren der digitalen Nahbereichsphotogrammetrie ermöglichen eine dreidimensionale Erfassung von Objekten und stellen damit interessante Lösungsansätze für Messaufgaben im Bautechnischen Mess- und Versuchswesen dar. Ihr Einsatz bietet bei einer Vielzahl baumechanischer Untersuchungen die Voraussetzung für eine kontinuierliche, zeitsynchrone Objektoberflächenerfassung bei kurz- und langzeitigen Belastungsversuchen im Labor und in situ. Die daraus resultierenden Möglichkeiten der kontinuierlichen Erfassung von Verformungs-, Riss- und Schädigungsentwicklungen an Objektoberflächen stellen für viele experimentelle Untersuchungen im Bauingenieurwesen eine signifikante Qualitätssteigerung dar, die mit klassischen Messtechniken – wie z. B. Dehnmessstreifen oder induktiven Wegaufnehmern – nur bedingt bzw. nicht realisiert werden kann. Um das Potential der digitalen Nahbereichsphotogrammetrie zur kontinuierlichen Erfassung der Verformungs-, Riss- und Schädigungsentwicklung an Objektoberflächen bei baumechanischen Untersuchungen erfassen zu können, wurden – aufbauend auf den bekannten Grundlagen und Lösungsansätzen – systematische Untersuchungen durchgeführt. Diese bildeten den Ausgangspunkt für den Einsatz photogrammetrischer Verfahren bei experimentellen Untersuchungen in den verschiedenen Teildisziplinen des Bauingenieurwesens, z. B. im Holz-, Massiv-, Mauerwerks-, Stahl- und Straßenbau. Die photogrammetrisch zu erfassenden Versuchsobjekte – einschließlich ihrer Veränderungen bei den Belastungsversuchen – waren dabei u. a. kleinformatige Prüfkörper und Baukonstruktionen aus den verschiedensten Materialien bzw. Verbundmaterialien. Bei den anwendungsorientierten Untersuchungen musste beachtet werden, dass aufgrund der z. T. sehr heterogenen Anforderungen und der zahlreichen Möglichkeiten, die beim Einsatz photogrammetrischer Verfahren denkbar waren, die Notwendigkeit der Auswahl und ggf. einer Weiter- bzw. Neuentwicklung geeigneter Systeme, effizienter Verfahren und optimaler Auswertealgorithmen der digitalen Nahbereichsphotogrammetrie bestand. In diesem Zusammenhang wurde mit der systematischen Zusammenstellung und Untersuchung relevanter Einflussgrößen begonnen. Diese waren oftmals durch die jeweiligen photogrammetrischen Messprozesse und Messaufgaben beeinflusst. Die Ergebnisse machen deutlich, dass die digitale Nahbereichsphotogrammetrie ein flexibel anwendbares Werkzeug für die Erfassung der Verformungs-, Riss- und Schädigungsentwicklung bei baumechanischen Untersuchungen darstellt. Spezielle Messaufgaben stellen im Bautechnischen Mess- und Versuchswesen oftmals sehr hohe Anforderungen an die Messgenauigkeit, die Robustheit und das Messvolumen. Sie erfordern optimierte Verfahren und führten im Zusammenhang mit der vorliegenden Arbeit zu einer Reihe von Lösungen, wie beispielsweise der 2.5D-Objekterfassung auf Basis der Dynamischen Projektiven Transformation oder der Objekterfassung mittels Spiegelphotogrammetrie. Im Hinblick auf die Objektsignalisierung wurde eine intensitätsbasierte Messmarke entwickelt. Diese ermöglicht besonders bei sehr hochgenauen Deformations- bzw. Dehnungsmessungen ein großes Genauigkeitspotential im Sub-Pixelbereich, das im 1/100 eines Pixels liegt. In Bezug auf die photogrammetrischen Auswerteprozesse wurden optimierte Bildzuordnungsverfahren implementiert, die beispielsweise eine Punkteinmessung von bis zu 60.000 Punkten pro Sekunde ermöglichen und eine Grundlage für die flächenhafte Rissanalyse darstellen. In Bezug auf die qualitative und quantitative Risserfassung wurden verschiedene Verfahren entwickelt. Diese ermöglichen z. B. die lastabhängige Erfassung der Rissposition und -breite in Messprofilen. In einem Messbereich von 100 mm x 100 mm konnten beispielsweise Verformungen mit einer Genauigkeit bis 1 µm und Rissbreiten ab 3 µm erfasst werden. Im Zusammenhang mit den zahlreichen anwendungsbezogenen Untersuchungen entstanden immer wieder Fragen hinsichtlich der Faktoren, die einen Einfluss auf den photogrammetrischen Messprozess im Bautechnischen Mess- und Versuchswesen ausüben. Aufgrund der zahlreichen Einflussgrößen, die als Steuer- bzw. Störgrößen eine mögliche Wirkung auf bauspezifische photogrammetrische Messprozesse ausüben können, wurde im Rahmen der vorliegenden Arbeit mit deren systematischer Zusammenstellung relevanter Einflussgrößen begonnen. Die Relevanz einzelner Einflussgrößen konnte durch Untersuchungen bereits bestätigt werden. Um eine ganzheitliche Bewertung aller relevanten Einflussgrößen aufgabenabhängig vornehmen zu können, wurde ein spezieller Versuchsstand entwickelt. Dieser ermöglicht eine vollautomatisierte systematische Untersuchung bauspezifischer photogrammetrischer Messprozesse unter definierten Versuchsbedingungen und dient dem systematischen Einsatz photogrammetrischer Verfahren im Bautechnischen Mess- und Versuchswesen hinsichtlich der Absicherung bestehender Messaufgaben, kann aber auch zu weiteren neuen und optimierten Messprozessen führen
Methods of digital close range photogrammetry are a useful tool for the measurement of three-dimensional objects in civil engineering material testing. They are generally suitable for automatic measurements with chronological synchronism of object-surfaces during short and long time load tests in laboratories and in situ. The methods provide an opportunity for measuring deformations, cracks and damages at the object-surfaces during load tests in civil engineering material testing. These possibilities can present new results for a lot of applications in civil engineering material testing. Displacement and deformation measurements still rely on wire strain gauges or inductive displacement transducers. However, they are not suitable for a large number of measurement points or the detection of cracks during load tests. First of all, a number of systematic investigations was conducted. This was necessary to identify capable methods of the digital photogrammetry for the measuring of deformations, cracks and damages at object-surfaces during load tests in civil engineering material testing. These investigations laid the foundation for practical measurements during short and long time load tests of samples and constructions from different parts of the civil engineering (e.g. timber construction, solid structure, stell and road construction). The application-oriented research in civil engineering material testing demonstrates the wide range of demands on systems and methods of digital close range photogrammetry have to meet. Often the methods and systems of digital close range photogrammetry had to be modified or developed. In this context the systematic analysis of relevant determining factors was started.The results demonstrate that the methods and systems of digital close range photogrammetry are a suitable and flexible tool for the measurement of deformations, cracks and damages at the object-surfaces in civil engineering material testing. In addition, the special experiments in civil engineering material testing demonstrate the high requirements laid upon methods and systems of the digital closed range photogrammetry, for instance regarding with the measurement resolution/range and robustness processes. This was the motivation to optimize and to develop methods and systems for the special measurement tasks in civil engineering material testing, for instance a 2.5D measurement technique based on the Dynamic Projective Transformation (DPT) or the use of mirrors. Also a special measurement target was developed. This type of measurement target modifies intensities and is ideal for high deformation measurements (1/100 pixel). The large number of points in conjunction with area-based measurements require time-optimized methods for the analysis process. The modified and developed methods/programs enable fast analysis-processes, e.g. in conjunction with point-matching process 60.000 points per second.The developed crack-detection-methods allow area- and profile-based to analyze the load-dependent position and width of cracks, e.g. cracks &gt; 3 µm (100 mm x 100 mm). A main target of this work was to compile all relevant determining factors regarding the application of the digital close range photogrammetry during load tests in civil engineering material testing. To a large extent, this target was reached. However, the compilation of all relevant determining factors requires a special experimental set-up. This experimental set-up was developed. In the future, it may enable the automatic research of all significant determining factors. The results can be used to qualify or optimize the established methods and processes. Also it's possible that the results generates new measurement processes
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2

Hampel, Uwe. "Photogrammetrische Erfassung der Verformungs- und Rissentwicklung bei baumechanischen Untersuchungen." Doctoral thesis, Technische Universität Dresden, 2007. https://tud.qucosa.de/id/qucosa%3A23829.

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Verfahren der digitalen Nahbereichsphotogrammetrie ermöglichen eine dreidimensionale Erfassung von Objekten und stellen damit interessante Lösungsansätze für Messaufgaben im Bautechnischen Mess- und Versuchswesen dar. Ihr Einsatz bietet bei einer Vielzahl baumechanischer Untersuchungen die Voraussetzung für eine kontinuierliche, zeitsynchrone Objektoberflächenerfassung bei kurz- und langzeitigen Belastungsversuchen im Labor und in situ. Die daraus resultierenden Möglichkeiten der kontinuierlichen Erfassung von Verformungs-, Riss- und Schädigungsentwicklungen an Objektoberflächen stellen für viele experimentelle Untersuchungen im Bauingenieurwesen eine signifikante Qualitätssteigerung dar, die mit klassischen Messtechniken – wie z. B. Dehnmessstreifen oder induktiven Wegaufnehmern – nur bedingt bzw. nicht realisiert werden kann. Um das Potential der digitalen Nahbereichsphotogrammetrie zur kontinuierlichen Erfassung der Verformungs-, Riss- und Schädigungsentwicklung an Objektoberflächen bei baumechanischen Untersuchungen erfassen zu können, wurden – aufbauend auf den bekannten Grundlagen und Lösungsansätzen – systematische Untersuchungen durchgeführt. Diese bildeten den Ausgangspunkt für den Einsatz photogrammetrischer Verfahren bei experimentellen Untersuchungen in den verschiedenen Teildisziplinen des Bauingenieurwesens, z. B. im Holz-, Massiv-, Mauerwerks-, Stahl- und Straßenbau. Die photogrammetrisch zu erfassenden Versuchsobjekte – einschließlich ihrer Veränderungen bei den Belastungsversuchen – waren dabei u. a. kleinformatige Prüfkörper und Baukonstruktionen aus den verschiedensten Materialien bzw. Verbundmaterialien. Bei den anwendungsorientierten Untersuchungen musste beachtet werden, dass aufgrund der z. T. sehr heterogenen Anforderungen und der zahlreichen Möglichkeiten, die beim Einsatz photogrammetrischer Verfahren denkbar waren, die Notwendigkeit der Auswahl und ggf. einer Weiter- bzw. Neuentwicklung geeigneter Systeme, effizienter Verfahren und optimaler Auswertealgorithmen der digitalen Nahbereichsphotogrammetrie bestand. In diesem Zusammenhang wurde mit der systematischen Zusammenstellung und Untersuchung relevanter Einflussgrößen begonnen. Diese waren oftmals durch die jeweiligen photogrammetrischen Messprozesse und Messaufgaben beeinflusst. Die Ergebnisse machen deutlich, dass die digitale Nahbereichsphotogrammetrie ein flexibel anwendbares Werkzeug für die Erfassung der Verformungs-, Riss- und Schädigungsentwicklung bei baumechanischen Untersuchungen darstellt. Spezielle Messaufgaben stellen im Bautechnischen Mess- und Versuchswesen oftmals sehr hohe Anforderungen an die Messgenauigkeit, die Robustheit und das Messvolumen. Sie erfordern optimierte Verfahren und führten im Zusammenhang mit der vorliegenden Arbeit zu einer Reihe von Lösungen, wie beispielsweise der 2.5D-Objekterfassung auf Basis der Dynamischen Projektiven Transformation oder der Objekterfassung mittels Spiegelphotogrammetrie. Im Hinblick auf die Objektsignalisierung wurde eine intensitätsbasierte Messmarke entwickelt. Diese ermöglicht besonders bei sehr hochgenauen Deformations- bzw. Dehnungsmessungen ein großes Genauigkeitspotential im Sub-Pixelbereich, das im 1/100 eines Pixels liegt. In Bezug auf die photogrammetrischen Auswerteprozesse wurden optimierte Bildzuordnungsverfahren implementiert, die beispielsweise eine Punkteinmessung von bis zu 60.000 Punkten pro Sekunde ermöglichen und eine Grundlage für die flächenhafte Rissanalyse darstellen. In Bezug auf die qualitative und quantitative Risserfassung wurden verschiedene Verfahren entwickelt. Diese ermöglichen z. B. die lastabhängige Erfassung der Rissposition und -breite in Messprofilen. In einem Messbereich von 100 mm x 100 mm konnten beispielsweise Verformungen mit einer Genauigkeit bis 1 µm und Rissbreiten ab 3 µm erfasst werden. Im Zusammenhang mit den zahlreichen anwendungsbezogenen Untersuchungen entstanden immer wieder Fragen hinsichtlich der Faktoren, die einen Einfluss auf den photogrammetrischen Messprozess im Bautechnischen Mess- und Versuchswesen ausüben. Aufgrund der zahlreichen Einflussgrößen, die als Steuer- bzw. Störgrößen eine mögliche Wirkung auf bauspezifische photogrammetrische Messprozesse ausüben können, wurde im Rahmen der vorliegenden Arbeit mit deren systematischer Zusammenstellung relevanter Einflussgrößen begonnen. Die Relevanz einzelner Einflussgrößen konnte durch Untersuchungen bereits bestätigt werden. Um eine ganzheitliche Bewertung aller relevanten Einflussgrößen aufgabenabhängig vornehmen zu können, wurde ein spezieller Versuchsstand entwickelt. Dieser ermöglicht eine vollautomatisierte systematische Untersuchung bauspezifischer photogrammetrischer Messprozesse unter definierten Versuchsbedingungen und dient dem systematischen Einsatz photogrammetrischer Verfahren im Bautechnischen Mess- und Versuchswesen hinsichtlich der Absicherung bestehender Messaufgaben, kann aber auch zu weiteren neuen und optimierten Messprozessen führen.
Methods of digital close range photogrammetry are a useful tool for the measurement of three-dimensional objects in civil engineering material testing. They are generally suitable for automatic measurements with chronological synchronism of object-surfaces during short and long time load tests in laboratories and in situ. The methods provide an opportunity for measuring deformations, cracks and damages at the object-surfaces during load tests in civil engineering material testing. These possibilities can present new results for a lot of applications in civil engineering material testing. Displacement and deformation measurements still rely on wire strain gauges or inductive displacement transducers. However, they are not suitable for a large number of measurement points or the detection of cracks during load tests. First of all, a number of systematic investigations was conducted. This was necessary to identify capable methods of the digital photogrammetry for the measuring of deformations, cracks and damages at object-surfaces during load tests in civil engineering material testing. These investigations laid the foundation for practical measurements during short and long time load tests of samples and constructions from different parts of the civil engineering (e.g. timber construction, solid structure, stell and road construction). The application-oriented research in civil engineering material testing demonstrates the wide range of demands on systems and methods of digital close range photogrammetry have to meet. Often the methods and systems of digital close range photogrammetry had to be modified or developed. In this context the systematic analysis of relevant determining factors was started.The results demonstrate that the methods and systems of digital close range photogrammetry are a suitable and flexible tool for the measurement of deformations, cracks and damages at the object-surfaces in civil engineering material testing. In addition, the special experiments in civil engineering material testing demonstrate the high requirements laid upon methods and systems of the digital closed range photogrammetry, for instance regarding with the measurement resolution/range and robustness processes. This was the motivation to optimize and to develop methods and systems for the special measurement tasks in civil engineering material testing, for instance a 2.5D measurement technique based on the Dynamic Projective Transformation (DPT) or the use of mirrors. Also a special measurement target was developed. This type of measurement target modifies intensities and is ideal for high deformation measurements (1/100 pixel). The large number of points in conjunction with area-based measurements require time-optimized methods for the analysis process. The modified and developed methods/programs enable fast analysis-processes, e.g. in conjunction with point-matching process 60.000 points per second.The developed crack-detection-methods allow area- and profile-based to analyze the load-dependent position and width of cracks, e.g. cracks &gt; 3 µm (100 mm x 100 mm). A main target of this work was to compile all relevant determining factors regarding the application of the digital close range photogrammetry during load tests in civil engineering material testing. To a large extent, this target was reached. However, the compilation of all relevant determining factors requires a special experimental set-up. This experimental set-up was developed. In the future, it may enable the automatic research of all significant determining factors. The results can be used to qualify or optimize the established methods and processes. Also it's possible that the results generates new measurement processes.
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3

Eilermann, Frank. "Beiträge zum Aufbau eines forstlichen Geographischen Informationssystems unter besonderer Berücksichtigung der Integration der digitalen Photogrammetrie - dargestellt am Beispiel der Entwicklung von Entscheidungshilfen für einen ökologisch begründeten Waldumbau." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2003. http://nbn-resolving.de/urn:nbn:de:swb:14-1040304585218-28204.

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Für einen ökologischen Waldumbau sind naturwissenschaftliche und ökonomische Grundlagen erforderlich, um die Entscheidungsträger unterstützen. Die Problematik des Waldumbaus bei heterogenen Bedingungen des Osterzgebirges setzt ein flächenbezogenes Informationsmanagement voraus. Durch Aufbau eines forstökologischen Informationssystems werden naturwissenschaftliche und forstbetriebliche Grunddaten auf räumliche Einheiten übertragen und damit Entscheidungshilfen. Zur Erzielung standortsgerechter, stabiler und leistungsfähiger Mischbestände müssen unter Berücksichtigung waldbaulicher und ertragskundlicher Verhältnisse waldbauliche Strategien aufgezeigt und deren mittelfristige Umsetzung geplant werden. Zur Gestaltung des Planungskonzepts werden ausgehend vom IST-Zustand geeignete Maßnahmen zum Erreichen eines SOLL-Zustands aufgezeigt. Instrumentelle Basis bildet ein Forstökologisches Informationssystem, dessen GIS-Funktionalitäten flächenbezogene Entscheidungshilfen durch vielschichtige Datenanalyse ermöglichen. Die Auswertung von analogen und digitalen Luftbildern mit verschiedenen Stichprobenverfahren werden kombiniert. Mit einem Kalkulationsprogramm werden Bewirtschaftungsmaßnahmen hinsichtlich zu erwartender Kosten und Erlöse charakterisiert. Durch das Informationssystems lassen sich die naturwissenschaftlichen und forstbetrieblichen Grunddaten auf räumliche Einheiten übertragen. Planungsvorschläge zum Waldumbau in Form von Entscheidungshilfen stehen zur Verfügung. Die Integration auf Intensivmeßflächen gewonnener Daten ins Informationssystem und Übertragung auf flächige Bezugseinheiten gewährleisten die Beachtung vielfältiger Ursache-Wirkungsbeziehungen zur forstbetrieblichen Planung. Für die verschiedenen Höhenstufen werden spezifische waldbauliche Behandlungsvarianten durch Entscheidungsmodelle abgebildet, die eine flächenbezogene Umsetzung ermöglichen.
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Eilermann, Frank. "Beiträge zum Aufbau eines forstlichen Geographischen Informationssystems unter besonderer Berücksichtigung der Integration der digitalen Photogrammetrie - dargestellt am Beispiel der Entwicklung von Entscheidungshilfen für einen ökologisch begründeten Waldumbau." Doctoral thesis, Technische Universität Dresden, 2002. https://tud.qucosa.de/id/qucosa%3A23964.

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Für einen ökologischen Waldumbau sind naturwissenschaftliche und ökonomische Grundlagen erforderlich, um die Entscheidungsträger unterstützen. Die Problematik des Waldumbaus bei heterogenen Bedingungen des Osterzgebirges setzt ein flächenbezogenes Informationsmanagement voraus. Durch Aufbau eines forstökologischen Informationssystems werden naturwissenschaftliche und forstbetriebliche Grunddaten auf räumliche Einheiten übertragen und damit Entscheidungshilfen. Zur Erzielung standortsgerechter, stabiler und leistungsfähiger Mischbestände müssen unter Berücksichtigung waldbaulicher und ertragskundlicher Verhältnisse waldbauliche Strategien aufgezeigt und deren mittelfristige Umsetzung geplant werden. Zur Gestaltung des Planungskonzepts werden ausgehend vom IST-Zustand geeignete Maßnahmen zum Erreichen eines SOLL-Zustands aufgezeigt. Instrumentelle Basis bildet ein Forstökologisches Informationssystem, dessen GIS-Funktionalitäten flächenbezogene Entscheidungshilfen durch vielschichtige Datenanalyse ermöglichen. Die Auswertung von analogen und digitalen Luftbildern mit verschiedenen Stichprobenverfahren werden kombiniert. Mit einem Kalkulationsprogramm werden Bewirtschaftungsmaßnahmen hinsichtlich zu erwartender Kosten und Erlöse charakterisiert. Durch das Informationssystems lassen sich die naturwissenschaftlichen und forstbetrieblichen Grunddaten auf räumliche Einheiten übertragen. Planungsvorschläge zum Waldumbau in Form von Entscheidungshilfen stehen zur Verfügung. Die Integration auf Intensivmeßflächen gewonnener Daten ins Informationssystem und Übertragung auf flächige Bezugseinheiten gewährleisten die Beachtung vielfältiger Ursache-Wirkungsbeziehungen zur forstbetrieblichen Planung. Für die verschiedenen Höhenstufen werden spezifische waldbauliche Behandlungsvarianten durch Entscheidungsmodelle abgebildet, die eine flächenbezogene Umsetzung ermöglichen.
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Masaad, Elshami M. "Close-range photogrammetry based on digital imagery analysis : real-time photogrammetric measurements from video imagery." Thesis, University of Manchester, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338480.

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Smith, Douglas G. "Digital photogrammetry for elevation modelling." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362992.

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Li, Xiaopeng. "Photogrammetric investigation into low-resolution digital camera systems." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0016/NQ46296.pdf.

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Adler, Petra. "Einsatz digitaler Photogrammetrie zur Beschreibung von Waldbeständen - am Beispiel der digitalen photogrammetrischen Erfassung der Level-2-Flächen Baden-Württembergs." [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963868454.

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Tseng, Yi-Hsing. "Digital photogrammetric approach to ice-flow determination in Antarctica /." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487779439846091.

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Smit, Julian Lloyd. "Three dimensional measurement of textured surfaces using digital photogrammetric techniques." Doctoral thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/16087.

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Bibliography: pages 133-156.
The deep-level gold mines on the Witwatersrand (South Africa) are located at depths of over 3,000m below surface. Mining excavations follow tabular reefs that are kilometres in extent, but only a few centimetres thick. Due to the great depths of these excavations and the large overburden of rock, immense pressure is exerted on the rock mass being excavated. In order to relieve this stress in the rock mass being mined, the rock is "pre-conditioned" by pre-fracturing the rock face with large blasts. This has the effect of pushing the critical stress load further into the rock mass, thus increasing safety at the rock face. To better understand the rock behaviour as a result of by pre-conditioning blasts, it is desirable to quantify the deformations of the rock face. Digital photogrammetry provides an ideally suited method of monitoring these deformations, as the necessary equipment is portable and easy to use underground, where the conditions are extreme with temperatures approaching 40°C and humidity levels close to 100%. Digital photogrammetric techniques are also highly accurate, and can be used to detect relatively small three-dimensional movements. The determination of the three-dimensional (XYZ) co-ordinates of the rock face, represented by densely spaced individual points, by means of digital photogrammetric techniques, is reported in this thesis. The novel measurement system developed comprises the following components: * establishment of a stable reference co-ordinate system; * image acquisition; * camera calibration and exterior orientation calculation; * feature extraction; * multi-image matching and space intersection; and * surface modelling. The details of the techniques developed and implemented in order to generate the necessary object space co-ordinates are discussed. Sub-millimetre accuracy point determination, as required for deformation analysis was achieved and a sample of the underground test result data is presented. The final analysis of the underground test data made it apparent that digital photogrammetry is highly suitable for the determination of digital terrain models of the rock surfaces, for subsequent deformation analysis. The relative speed of the process and the convenient size of the equipment makes the technology especially suitable to the demanding underground mining environment. The difficulties, which were experienced as a result of the highly restrictive environment, were overcome through careful planning and pre-analysis. It can thus be concluded that this approach is not only feasible, but it meets the stringent demands of the underground mining industry, as is confirmed by the high accuracy of the final surface point co-ordinates achieved. In addition to being implemented in the underground mining industry, the measurement system developed was used for the mapping of several other textured surfaces. In particular it was used in mapping the 3.6 million-year-old hominid trackway located at Laetoli (Tanzania), the imprints of cheetah and rhinoceros for the purposes of conservation, and for the archaeological documentation of a shipwreck found off the Cape coast (South Africa). All of these applications are discussed and the results achieved presented.
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Books on the topic "Digitale Photogrammetrie"

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Linder, Wilfried. Digital photogrammetry: A practical course. 3rd ed. Berlin: Springer, 2009.

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Linder, Wilfried. Digital photogrammetry: Theory and applications. Berlin: Springer, 2003.

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Schenk, Toni. Digital photogrammetry. Laurelville, Ohio: TerraScience, 1999.

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Kasser, Michel. Digital Photogrammetry. London: Taylor & Francis Group Plc, 2004.

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Yves, Egels, ed. Digital photogrammetry. London: Taylor & Francis, 2002.

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Linder, Wilfried. Digital Photogrammetry. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-06725-3.

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Linder, Wilfried. Digital Photogrammetry. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-50463-5.

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Linder, Wilfried. Digital Photogrammetry. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-92725-9.

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Sensing, American Society for Photogrammetry and Remote. Digital photogrammetry: An addendum to the manual of photogrammetry. Bethesda: American Society for Photogrammetry and Remote Sensing, 1996.

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Linder, Wilfried. Digital photogrammetry: Theory and applications. Berlin: Springer, 2002.

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Book chapters on the topic "Digitale Photogrammetrie"

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Awange, Joseph, and John Kiema. "Digital Photogrammetry." In Environmental Geoinformatics, 179–90. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-03017-9_12.

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Awange, Joseph L., and John B. Kyalo Kiema. "Digital Photogrammetry." In Environmental Geoinformatics, 175–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-34085-7_12.

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Linder, Wilfried. "Introduction." In Digital Photogrammetry, 1–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-50463-5_1.

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Linder, Wilfried. "Programme Description." In Digital Photogrammetry, 121–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-50463-5_10.

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Linder, Wilfried. "Included Software and Data." In Digital Photogrammetry, 17–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-50463-5_2.

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Linder, Wilfried. "Scanning of Photos." In Digital Photogrammetry, 21–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-50463-5_3.

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Linder, Wilfried. "A Single Model." In Digital Photogrammetry, 25–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-50463-5_4.

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Linder, Wilfried. "Aerial Triangulation." In Digital Photogrammetry, 61–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-50463-5_5.

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Linder, Wilfried. "A Soil Erosion Experiment." In Digital Photogrammetry, 93–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-50463-5_6.

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Linder, Wilfried. "Wave Measurements." In Digital Photogrammetry, 99–108. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-50463-5_7.

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Conference papers on the topic "Digitale Photogrammetrie"

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Toglia, Angelo, Gregory D. Stephens, David J. Michalski, and Joy L. Rodriguez. "Applications of PhotoModeler in Accident Reconstruction." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79250.

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Photographic methods of analyzing vehicles and scenes for the purpose of accident reconstruction have been well researched and documented. Photogrammetric analysis has appeared in various forms and levels of complexity over the years. Mathematical relationships have been researched and presented depicting the methods and bases of these techniques. This paper will present some new tools and methodologies in the process of photographic analysis. The PhotoModeler program will be utilized to demonstrate applications of digital photogrammetry in the field of accident reconstruction. Several different methodologies, including single and multiple photograph projects using calibrated and inverse cameras, will be evaluated and demonstrated. Additionally, comparisons to traditional methods of measurements will be presented. It will be demonstrated that the use of digital photogrammetry has advanced the science of accident reconstruction by employing computer and digital technology to achieve greater efficiency and improved accuracy.
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Pottler, Klaus, Eckhard Lu¨pfert, Glen H. G. Johnston, and Mark R. Shortis. "Photogrammetry: A Powerful Tool for Geometric Analysis of Solar Concentrators and Their Components." In ASME 2004 International Solar Energy Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/isec2004-65117.

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Digital close range photogrammetry has proven to be a precise and efficient measurement technique for the assessment of shape accuracies of solar concentrators and their components. The combination of high quality mega-pixel digital still cameras, appropriate software and calibrated reference scales in general is sufficient to provide coordinate measurements with precisions of 1:50,000 or better. The extreme flexibility of photogrammetry to provide high accuracy 3-D coordinate measurements over almost any scale makes it particularly appropriate for the measurement of solar concentrator systems. It can also provide information for the analysis of curved shapes and surfaces, which can be very difficult to achieve with conventional measurement instruments. The paper gives an overview of quality indicators for photogrammetric networks, which have to be considered during the data evaluation to augment the measurement precision. A selection of measurements done on whole solar concentrators and their components are presented. The potential of photogrammetry is demonstrated by presenting measured effects arising from thermal expansion and gravitational forces on selected components. The measured surface data can be used to calculate slope errors and undertake raytrace studies to compute intercept factors and assess concentrator qualities.
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Peipe, Juergen, Carl T. Schneider, and K. Sinnreich. "Digital photogrammetric station DPA: a measurement system for close-range photogrammetry." In Optical 3D Measurement Techniques II: Applications in Inspection, Quality Control, and Robotics, edited by Armin Gruen and Heribert Kahmen. SPIE, 1994. http://dx.doi.org/10.1117/12.169850.

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Vincent, Mahamadaly, Urbina Bareto Isabel, Fréchon Louis, Pinel Romain, Garnier Rémi, and Deslarzes Kenneth. "Underwater Photogrammetry as an Environmental Assessment Tool to Monitor Coral Reefs and Artificial Structures." In Offshore Technology Conference. OTC, 2021. http://dx.doi.org/10.4043/31025-ms.

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Abstract Over the past decade, photogrammetry has grown considerably thanks to technical advances in digital cameras and computing performance. Popular in terrestrial applications with the development of UAV acquisition, photogrammetry provides access to accurate scene reconstruction, high-resolution measurements, and temporal comparisons with a wide range of geolocated and scaled 2D and 3D supports. Nowadays, photogrammetry represents a particular challenge in the underwater field such as environmental monitoring, marine construction, technical inspection, and archaeology. Our study aims to develop underwater acquisition protocols and new tools for marine resources surveys and management to understand the role of 3D characteristics in both coral reefs and artificial structures. Two specific protocols were designed and optimized to reconstruct from coral colonies to coral reefs and artificial structures (up to 500m²) with a mean resolution of 0.05cm/pixel. Here several quantitative descriptors based on 2D and 3D metrics (such as slope, length, surface, volume, rugosity) were calculated for morphological studies and temporal comparisons. The photogrammetric technique now offers higher quality and accuracy tools compared to traditional survey methods. These advantages make possible to access to new scientific surveys of underwater ecosystems and as environmental management tools may prove to be valuable for future.
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Valero, Enrique, Alan Forster, Frédéric Bosché, Lyn Wilson, and Alick Leslie. "COMPARISON OF 3D REALITY CAPTURE TECHNOLOGIES FOR THE SURVEY OF STONE WALLS." In ARQUEOLÓGICA 2.0 - 8th International Congress on Archaeology, Computer Graphics, Cultural Heritage and Innovation. Valencia: Universitat Politècnica València, 2016. http://dx.doi.org/10.4995/arqueologica8.2016.2582.

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The maintenance of the external fabric of historic buildings constitutes a large portion of overall building life cycle costs.Advanced reality capture and data processing technologies have the potential to transform existing survey practice,providing surveyors with objective data pertaining to building fabric, in a more rapid (frequent), safe and cost-effectivemanner. In this paper, we present a unique evaluation of several Terrestrial Laser Scanning (TLS) and photogrammetric(PG) systems that assess their relative strengths for the survey of stone walls. The assessment is conducted using anhistoric building selected for its representativeness of form, fabric and condition. The work considers performance interms of data accuracy and precision, data completeness, and process efficiency. The results show that, while TLSprovides good geometric data to generate accurate and valuable 3D models, the quality of PG reconstructions can bealso be sufficient in such contexts. And considering the relatively low-cost and portability of modern digital camerascompared to laser scanners, photogrammetry can constitute a realistic alternative to TLS. In addition, mounting a cameraon a UAV could further solve access issues, preventing the need for any additional infrastructure (e.g. scaffolding), whichwould be required when employing TLS. However, a lesson drawn from this work is that effective acquisition ofphotogrammetric data requires careful planning to select the appropriate camera settings and picture density (andlocations) to ensure accurate and reliable photogrammetric reconstruction. This process may be referred to as: Planningfor Photogrammetry (P4P).
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Chapuis, Alain. "Developments in digital photogrammetry and a description of the flow of data through a digital photogrammetric system." In Digital Photogrammetry and Remote Sensing '95, edited by Eugeny A. Fedosov. SPIE, 1995. http://dx.doi.org/10.1117/12.227885.

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Kim, C., H. Son, and C. Kim. "The Effective Acquisition and Processing of 3D Photogrammetric Data from Digital Photogrammetry for Construction Progress Measurement." In International Workshop on Computing in Civil Engineering 2011. Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/41182(416)22.

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Kaufman, John, Allan E. W. Rennie, and Morag Clement. "Reverse Engineering Using Close Range Photogrammetry for Additive Manufactured Reproduction of Egyptian Artefacts and Other Objets d’art." In ASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/esda2014-20304.

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Photogrammetry has been in use for over one hundred and fifty years. This research considers how digital image capture using a medium range Nikon Digital SLR camera, can be transformed into 3D virtual spatial images, and together with additive manufacturing (AM) technology, geometric representations of the original artefact can be fabricated. The research has focused on the use of photogrammetry as opposed to laser scanning (LS), investigating the shift from LS use to a Digital Single Lens Reflex (DSLR) camera exclusively. The basic photogrammetry equipment required is discussed, with the main objective being simplicity of execution for eventual realisation of physical products. As the processing power of computers has increased and become widely available, at affordable prices, software programs have improved, so it is now possible to digitally combine multi-view photographs, taken from 360°, into 3D virtual representational images. This has now led to the possibility of 3D images being created without LS intervention. Two methods of digital data capture are employed and discussed, in acquiring up to 130 digital data images, taken from different angles using the DSLR camera together with the specific operating conditions in which to photograph the objects. Three case studies are documented, the first, a modern clay sculpture, whilst the other two are 3000 year old Egyptian clay artefacts and the objects were recreated using AM technology. It has been shown that with the use of a standard DSLR camera and computer software, 2D images can be converted into 3D virtual video replicas as well as solid, geometric representation of the originals.
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Kobayashi, Y. "Photogrammetry and 3D city modelling." In DIGITAL ARCHITECTURE 2006. Southampton, UK: WIT Press, 2006. http://dx.doi.org/10.2495/darc060211.

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Mayr, Werner. "Potential of digital photogrammetric systems." In AeroSense '97, edited by David M. McKeown, Jr., J. Chris McGlone, and Olivier Jamet. SPIE, 1997. http://dx.doi.org/10.1117/12.281062.

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Reports on the topic "Digitale Photogrammetrie"

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Edwards, Daniel. System Integration Issues in Digital Photogrammetric Mapping. Fort Belvoir, VA: Defense Technical Information Center, January 1992. http://dx.doi.org/10.21236/ada254046.

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Brown, Roger O. Photogrammetric GIS Technology: Feature Mapping on Digital Stereo Imagery. Fort Belvoir, VA: Defense Technical Information Center, August 1991. http://dx.doi.org/10.21236/ada254255.

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Escarzaga, Stephen, N. E. M. Kinsman, and J. R. Overbeck. Photogrammetric digital surface models and mosaiced orthoimagery for Barter Island, Alaska. Alaska Division of Geological & Geophysical Surveys, 2020. http://dx.doi.org/10.14509/30456.

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Frano, Glenn, Daniel Edwards, Mitchell Pierson, Maurits Roos, Michael Barwick, and Paul McCracken. The Use of Digital Stereo Photogrammetric Methods in Historical Photo Analysis. Fort Belvoir, VA: Defense Technical Information Center, January 1994. http://dx.doi.org/10.21236/ada275287.

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Salisbury, J. B., A. M. Herbst, and Katreen Wikstrom Jones. Photogrammetric digital surface models and orthoimagery of EauClaire Place, December 5th, 2018. Alaska Division of Geological & Geophysical Surveys, 2020. http://dx.doi.org/10.14509/30273.

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Salisbury, J. B., A. M. Herbst, and Katreen Wikstrom Jones. Photogrammetric digital surface models and orthoimagery of Eklutna Lake, December 5th, 2018. Alaska Division of Geological & Geophysical Surveys, 2020. http://dx.doi.org/10.14509/30274.

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Salisbury, J. B., A. M. Herbst, and Katreen Wikstrom Jones. Photogrammetric digital surface models and orthoimagery of Glenn Highway, December 5th, 2018. Alaska Division of Geological & Geophysical Surveys, 2020. http://dx.doi.org/10.14509/30275.

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Salisbury, J. B., A. M. Herbst, and Katreen Wikstrom Jones. Photogrammetric digital surface models and orthoimagery of Mackenzie Road, December 5th, 2018. Alaska Division of Geological & Geophysical Surveys, 2020. http://dx.doi.org/10.14509/30277.

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Salisbury, J. B., A. M. Herbst, and Katreen Wikstrom Jones. Photogrammetric digital surface models and orthoimagery of Minnesota Drive, December 5th, 2018. Alaska Division of Geological & Geophysical Surveys, 2020. http://dx.doi.org/10.14509/30278.

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Salisbury, J. B., A. M. Herbst, and Katreen Wikstrom Jones. Photogrammetric digital surface models and orthoimagery of Pittman Road, December 5th, 2018. Alaska Division of Geological & Geophysical Surveys, 2020. http://dx.doi.org/10.14509/30279.

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