Title :
Vision-based construction of CAD models from range images
Author :
CHEN, Xin ; Schmitt, Francis
Author_Institution :
Ecole Nat. Superieure des Telecommun., Paris, France
Abstract :
The authors propose an edge-based method for the automatic construction of CAD models from range images of a prototype object. First, surface discontinuities of C0 and C 1 types and the curves of surface curvature extrema are extracted from the range images. Then, a piecewise G1-continuous surface description with triangular Gregory-Be´zier patches is constructed to embed these extracted surface characteristics. The construction of this description is adaptive in the sense that an initially rough approximation is progressively refined at the locations where the approximation accuracy does not meet the requirements
Keywords :
CAD; computational geometry; computer vision; object recognition; solid modelling; CAD models; approximation accuracy; edge-based method; initially rough approximation; piecewise G1-continuous surface description; prototype object; range images; surface curvature extrema; surface discontinuities; triangular Gregory-Be´zier patches; vision based construction; Data mining; Design automation; Ice surface; Image edge detection; Image segmentation; Prototypes; Refining; Rough surfaces; Surface reconstruction; Surface roughness;
Conference_Titel :
Computer Vision, 1993. Proceedings., Fourth International Conference on
Conference_Location :
Berlin
Print_ISBN :
0-8186-3870-2
DOI :
10.1109/ICCV.1993.378227
