The basic steps of automatic surface reconstruction from digital images are briefly outlined, with attention to the factor determining the final quality of the process. The reconstruction of the deformation surface of a metal plate stressed to failure is then presented. The automatic search of the interesting points, the identification of conjugate pairs and the l.s. matching are described, outlining limits and characteristics peculiar to the chosen method. The results are also discussed in comparison with a previous photogrammetric survey by analogue imagery.
Automatic deformation measurement from digital images / B. Crippa, G. Forlani, A. De Haan (PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING). - In: Optical 3d measurement techniques II: Applications in inspection, quality control, and robotics / [a cura di] A. Gruen, H. Kahmen. - [s.l] : International Society for Photogrammetry and Remote Sensing, 1994. - pp. 557-563 (( Intervento presentato al 2. convegno Conference on Optical 3D Measurement Techniques : October, 4 - 7 tenutosi a Zurich nel 1993 [10.1117/12.169884].
Automatic deformation measurement from digital images
B. CrippaPrimo
;
1994
Abstract
The basic steps of automatic surface reconstruction from digital images are briefly outlined, with attention to the factor determining the final quality of the process. The reconstruction of the deformation surface of a metal plate stressed to failure is then presented. The automatic search of the interesting points, the identification of conjugate pairs and the l.s. matching are described, outlining limits and characteristics peculiar to the chosen method. The results are also discussed in comparison with a previous photogrammetric survey by analogue imagery.
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