Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 28 for “"Digital Photogrammetry"”.
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Digital photogrammetry for visualisation in architecture and archaeology
… and students alike if accurate and extensive digital 3D models of archaeological structures can be generated. This thesis investigates a method of creating such models, using digital photogrammetry. Three different types of model were generated: 1. the simple CAD (Computer Aided Design) model; …
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Low-Cost, Close-Range Digital Photogrammetry for Coastal Cliff Deformation and Beach Monitoring
… protecting against coastal flooding and erosion. Photogrammetry is the most adopted technology for shoreline monitoring and management. While there are existing efforts in the application of close-range digital photogrammetry in monitoring Coastal Areas, there is no widespread adoption of a …
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Object reconstruction using close-range all-round digital photogrammetry for applications in industry
Photogrammetry has many inherent advantages in engineering and industrial applications, which include the ability to obtain accurate, non-contact measurements from data rapidly acquired with the object in situ. Along with these advantages, digital photogrammetry offers the potential for the …
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The mensuration of textured surfaces using close-range digital photogrammetry for applications in industry
… reports on the development of a close range digital photogrammetric surface measurement system for the semi-automatic measurement of rock faces in open cast mining environments. The system, designed for use by nonphotogrammetrists, allows for a rapid and simple field component of the …
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Determining the parameters of cylinders using digital photogrammetry for application to pipe measurement in industrial plants
… paper plans. Conventional surveying and analogue photogrammetry have been methods that have traditionally been used to capture the necessary CAD information. More recently, the Department of Geomatics at the University of Cape Town has produced software which replicates the analogue …
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La fotogrametría como herramienta para la conservación y valorización de bienes patrimoniales.
… studies for the documentation of these with the photogrammetry as useful way/tool in each one of the intervention phases. The Patrimony is a necessary resource for the social development that, due to its essential value of identity, diversity and image, contributes to the evidentiary declaration …
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The image processing for the target centre detection in digital image
… Chapter one describes basic principles of the digital image, digital image construction and the present status of the digital photogrammetry system, named PHOENICS (PHOtogrammetric ENgineering and Industrial digital Camera System), as developed by H. Rüther (1989). The target's shape analysis …
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Informal settlement modeling using digital small-format aerial imagery
… include: (1) the use of color orthoimagery and digital surface model (DSM) generated from high-resoltion small-format digitial aerial imagery, (2) the separation of the shack reconstruction task into automated shack detection and interactive shack delineation, (3) the integration of multiple …
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Development of an image matching scheme using feature- and area based matching techniques
… to be one of the most difficult tasks of a digital photogrammetric system. Traditionally image matching has been approached from either an area based or a feature based point of view. In recent years significant progress has been made in Area Based Matching (ABM) techniques such as …
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Three dimensional measurement of textured surfaces using digital photogrammetric techniques
… 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 …
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The Potential of a Low Resolution Digital Camera in Close-Range Photogrammetry
… to study the potential and accuracy aspects of digital photogrammetry in close-range applications. The algorithms and softwares for control point measurement, conjugate epipolar lines computation and digital image correlation were developed. An experimental study was conducted with two GE …
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Scalable self-calibrating display technology for seamless large-scale displays
… precision necessary to create these displays. Digital photogrammetry and digital image warping techniques are used to make a single seamless image appear across the aggregated projection displays. The following techniques are used to improve the display quality: ** Anti-alias filtering to …
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Walk Deserts
… with dramatically poor health outcomes. Digital photogrammetry is used to explore how merging photorealistic, three-dimensional spatial models with environmental data can produce immersive and interactive data visualizations, including a web application, an augmented reality interface, …
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Single View Coplanar Photogrammetry and Uncertainty Analysis for Traffic Accident Reconstruction
Photogrammetry is defined as the science of measuring distances and objects by using photographs. Rapid advances in computer technology and digital photography in recent years have resulted in growing applications of digital photogrammetry. Although various aspects of photogrammetry have been …
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A comparative analysis of terrestrial laser scanning (TLS) and structure from motion (SfM) photogrammetry for measuring fluvial sediments
… in computer software have led to advancements in digital photogrammetry over a broad range of scales, with Structure from Motion (SfM) techniques enabling production of precise DEMs based on point-clouds analogous to, and even denser than, those produced by LiDAR, at significantly reduced cost and …
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Assessing glacier retreat and landform production at the ‘debris-charged’ snout of Kvíárjökull, Iceland
… as a ‘debris-charged glacier landsystem’. Digital photogrammetry was applied on five sets of aerial photographs from 1945 to 2003 in order to produce Digital Elevation Models from which measurements of morphometric change within the glacier snout and foreland were made. This analysis was …
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Walking away from VR as ‘empathy-machine’: peripatetic animations with 360-photogrammetry
… the bipedals of walking and the binaries of the digital are entwined by phenomenology, hauntology, performance, and the in-betweens of animation. My practice-as-research methodology involves desk study, experimentation with VR, AR, digital photogrammetry, and CGI animation. Central to my approach …
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Image understanding and feature extraction for applications in industry and mapping
The aim of digital photogrammetry is the automated extraction and classification of the three dimensional information of a scene from a number of images. Existing photogrammetric systems are semi-automatic requiring manual editing and control, and have very limited domains of application so that …
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THE SHEAR BEHAVIOUR OF THE REINFORCED CONCRETE FOUR-PILE CAPS
… feature of this research is the application of a digital photogrammetry technique (PIV), normally applied in soil and fluid mechanics, to a solid mechanics situation. The tool has successfully detected the full-field displacement on the concrete surface and strains which are of high magnitude. The …
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The design of a digital photogrammetric metrology system for the semi-automated surveying and recording of pipe dimensions in industrial plants
… of industrial plants. The system makes use of digital photogrammetry to assist an operator in locating and identifying components of the plants. All of the important photogrammetric theory is discussed in the text, and explained in detail in the appendices. Specifically, this system implements …
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