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Efficient Computation for Connected Components of an Isophote in a Surface of Revolution  

Kim, Ku-Jin (Information Communication, Graduate School of Ajou University)
Lee, In-Kwon (Dept.of Media, Ajou University)
Publication Information
Journal of KIISE:Computer Systems and Theory / v.29, no.8, 2002 , pp. 440-444 More about this Journal
Abstract
This paper presents an efficient and robust algorithm to compute the isophote of a surface of revolution. A surface of revolution can be decomposed to a set of cross-sectional circles. The surface normals along each cross-sectional circle form a cone. Using the characteristics of the normal vectors and the symmetric property of the surface of revolution, we propose a method to find the connected components of an isophote, which requires intersecting a planar curve(and its reflection) with two rays. Moreover, we propose a closed-form representation of an isophote as a parametric curve.
Keywords
Isophote; surface interrogation; Isophote; surface of revolution; surface interrogation;
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