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Getting Information from Photographs
Published in Donald E. Struble, John D. Struble, Automotive Accident Reconstruction, 2020
Donald E. Struble, John D. Struble
Another approach is PhotoModeler,13 a software package available since about the mid-1990s, and now fairly well known. As its name implies, PhotoModeler was designed for the purpose of building digital models from photographs, through the use of multiple overlapping photographs. For any given point on the object, the ideal situation is that two of the photos have about a 90° separation, and other photos may be used. Details of the inner workings of the software are proprietary, but it appears that two (or more) intersecting light rays are used to triangulate the position of the point. If a collection of such points is known, then a digital representation, or a model, of the object can be constructed.
Modeling and Visualization of Three Dimensional Objects Using Low-Cost Terrestrial Photogrammetry
Published in International Journal of Architectural Heritage, 2020
There are several low-cost commercial software that are used to obtain a 3-D model of captured images (e.g., Photomodeler and Agisoft PhotScan). They are developed by computer vision developers. Several known low-cost software packages were used by (Aicardi et al. 2018; Balletti et al. 2014; Jebur, Abed, and Mohammed 2018; Kersten, Mechelke, and Maziull 2015; Remondino et al. 2012) to obtain 3-D surface information from images. A few studies analyzed parameters that affect the quality of photogrammetric results including used software, number of photos, and control points. The results indicated that obtained results are not always consistent (Altman, Xiao, and Grayson 2017). The results of the study recommended the camera should be raised up by using scaffolding during image capturing to obtain more accurate results for tall buildings or facades.