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 226 for “"photogrammetry"”.
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Site characterization using drone based photogrammetry
… through Structure from Motion (SfM) photogrammetry. This study highlights a series of surveys utilizing a DJI Mavic II drone performed between July and August 2022 at an abandoned quarry in Clear Creek Canyon Park, located 0.25 miles west of Golden, Colorado. The purpose of these …
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Rational Design for Close-Range Photogrammetry
Made available in DSpace on 2014-12-13T19:31:28Z (GMT). No. of bitstreams: 1 7616161.pdf: 7627082 bytes, checksum: 8a79bcf13814b12efbf327284108a6ae (MD5) Previous issue date: 1976
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Volumetric object reconstruction by means of photogrammetry
In vielen Bereichen, wie Virtual Reality, Wissenschaft, Medizin und Unterhaltung wird die automatische Erstellung von 3D Computer Modellen benötigt. In dieser Arbeit behandeln wir das Problem zur Erstellung photorealistischer Modelle aus Einzelbildern und wir präsentieren eine volumetrische …
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A method of defllectometry based on photogrammetry
A method for deflectometry using photogrammetry has been designed and tested. The system is designed to measure the slopes from a specular or reflec-tive surface, with the design facilitating the optical quality assessment of he-liostats in the department of STERG. The current method operates by …
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Image Coordinate Refinement Analysis in Analytical Photogrammetry
Made available in DSpace on 2014-12-10T22:21:52Z (GMT). No. of bitstreams: 1 7309993.pdf: 4360402 bytes, checksum: edd5c4e521a81dda4cd0cef1120bba6f (MD5) Previous issue date: 1972
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An optimized data reduction technique in photogrammetry
The Direct Linear Transformation (DLT) method was first reported on in 1974 as an attractive alternative to existing photogrammetric reduction schemes for non-metric photography. While DLT resolved the problems of non-metric photography not having camera calibration information or fiducial marks …
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Modeling Ozark Caves with Structure-from-Motion Photogrammetry: An Assessment of Stand-Alone Photogrammetry for 3-Dimensional Cave Survey
… <p>This project endeavors to experiment with photogrammetry as a method of improving on traditional cave survey, while also avoiding some of the major pitfalls of terrestrial laser scanning. The proposed method allows for the creation of 3D models which capture cave wall geometry, important …
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Model Behavior: Using Photogrammetry for Collections Storage Planning
… this problem. This capstone explores the use of photogrammetry and 3D modeling to plan a collections storage move in a virtual environment. It examines the relationship between museums and technology through an analysis of museum studies literature, and showcases examples from the archaeology, …
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Digital photogrammetry for visualisation in architecture and archaeology
… a method of creating such models, using digital photogrammetry. Three different types of model were generated: 1. the simple CAD (Computer Aided Design) model; 2. an amalgamation of 3D line drawings; and 3. an accurate surface model of the building using DSMs (Digital Surface Models) and …
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A custom computing framework for orientation and photogrammetry
… is to develop this framework for orientation and photogrammetry systems.
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LOW-COST PHOTOGRAMMETRY SYSTEM FOR GEOREFERENCED STRUCTURE FROM MOTION
Photogrammetry has become increasingly available as a tool for re-constructing the 3D model of real-world objects and terrain, which is referred to as the structure from motion (SFM) solution. The re-constructed model has three-dimensional colorized surfaces. Integration of geo-referenced data into …
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Relative orientation with limited control in close range Photogrammetry
In close-range photogrammetry, situations can arise in which it is difficult or impossible to establish a network of control points as required for a conventional absolute orientation procedure. The thesis investigates the replacement of the traditional control network by a few control distances …
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A line photogrammetry algorithm for 3D rectilinear object reconstruction
… introduces an alternative formulation for line photogrammetry. The aim was to develop and test a method of computing the position and orientation of a straight line in space using two or more oriented images of that line. The algorithm presented is intended for object reconstruction and is …
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Comparing UAV and Pole Photogrammetry for Monitoring Beach Erosion
… South Carolina coast, using both UAV and pole photogrammetry. While both methods use the same software and photogrammetric workflow, the UAV produced better results with far fewer processing artifacts compared to pole photogrammetry.
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Monitoring Underground Mine Displacement Using Photogrammetry and Laser Scanning
Photogrammetry and laser scanning are remote sensing technologies with the potential to monitor movements of rock masses and their support systems in underground mine environments. Displacements underground are traditionally measured through point measurement devices, such as extensometers. These …
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The Sequential Givens method for adjustment computations in photogrammetry
… method for solving many adjustment problems in photogrammetry. The Givens method is one of a class of methods for solving linear systems known generally as orthogonalization or QR methods. It allows for sequential processing and greatly simplifies the computation of statistics on the …
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Ground Movements Around Model Tunnels in Sand (Settlements, Shield, Photogrammetry)
A geomechanical model, which simulated shield tunneling through soft ground, was developed and tested in dry sand. The test program was divided into four series of tests. In the O-, M-, and T-series, two concentrically placed circular tubes were used representing the model shield and model liner, …
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A study of water wave reflection using close range photogrammetry
… to a high degree of accuracy. Close range photogrammetry is the technique that is used to measure the water surface profile, as it produces an accurate and comprehensive analysis of the water surface profiles. Conventional photogrammetry techniques (photography) were used in preference to …
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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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