Title :
Determining back-facing curved model surfaces by analysis at the boundary
Author :
Fisher, Robert B.
Author_Institution :
Dept. of Artificial Intelligence, Edinburgh Univ., UK
Abstract :
An examination is made of the problem of predicting when a model surface patch on a three-dimensional object is totally back-facing, and hence need not be searched for during object recognition. Examining every point on the surface patch is inelegant and impractical, yet difficulties arise with curved surface patches. The authors conclude that visibility can be determined from an analysis of the surface orientation at the patch boundary for a wide class of model surface patch types (i.e. those having constant principal curvature signs), under orthographic projection
Keywords :
computer vision; computerised pattern recognition; computerised picture processing; back-facing curved model surfaces; boundary analysis; curvature signs; model surface patch; object recognition; orthographic projection; patch boundary; surface orientation; three-dimensional object; visibility; Artificial intelligence; Image analysis; Layout; Object recognition; Phase estimation; Predictive models; Shape; Solid modeling; Surface treatment;
Conference_Titel :
Computer Vision, 1990. Proceedings, Third International Conference on
Conference_Location :
Osaka
Print_ISBN :
0-8186-2057-9
DOI :
10.1109/ICCV.1990.139535