Abstract
The article presents a comparison of obtained models of a test object. Close range photogrammetry was used to obtain 3D models. As test object was used one of the rooms located in Wisłoujście Fortress in Gdańsk, Poland. Different models were obtained by using different distribution and number of reference points. Article contains analysis of differences between coordinates of control points obtained from total station measurements and estimated from different 3D models.
Highlights
Obtaining spatial information for the purpose of geometric archiving or spatial analysis of measured objects is a method increasingly used in engineering practice [1, 2, 3]
This article presents accuracy analysis of 3D model obtained by photogrammetric method using non-metric digital cameras
Different combinations of reference points placements on walls, floor and ceiling were used for analysis
Summary
Obtaining spatial information (in the form of point clouds) for the purpose of geometric archiving or spatial analysis of measured objects is a method increasingly used in engineering practice [1, 2, 3]. They are measuring distance and angles and in that way, a point cloud is created These types of instruments and software used by them are very expensive. This article presents accuracy analysis of 3D model obtained by photogrammetric method using non-metric digital cameras. The room's spatial model was made using the non-metric photogrammetry method. For this purpose, two cameras with fixed focus lenses were used: Canon EOS 5D (full frame 12 Mpix sensor) with Sigma 50mm f / 1.4 lens and. The spatial model was generated in Agisoft Photoscan Pro software
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