Title :
Recognizing algebraic surfaces from their outlines
Author_Institution :
Dept. of Comput. Sci., Iowa Univ., Iowa City, IA, USA
Abstract :
The author shows that the projective invariants of an algebraic surface can be computed from the outline of that surface in a perspective view using an uncalibrated camera, by showing that an outline completely determines the projective geometry of an algebraic surface. A single perspective view of a generic algebraic surface of degree three or greater uniquely determines the projective geometry of the surface. The result holds for an unknown focal point, and an uncalibrated camera. The projective ambiguity is not improved by using a calibrated camera
Keywords :
computational geometry; computer vision; image reconstruction; algebraic surfaces recognition; generic algebraic surface; outlines; projective geometry; projective invariants; uncalibrated camera; unknown focal point; Bibliographies; CADCAM; Cameras; Cities and towns; Computational geometry; Computer aided manufacturing; Computer science; Face detection; Labeling; Tail;
Conference_Titel :
Computer Vision, 1993. Proceedings., Fourth International Conference on
Conference_Location :
Berlin
Print_ISBN :
0-8186-3870-2
DOI :
10.1109/ICCV.1993.378177