We consider the interactions between edges and intensity distributions in semi-open image neighborhoods surrounding them. Locally this amounts to a kind of figure-ground problem, and we analyze the case of smooth surface occluding one another. Techniques from differential topology permits a classification of edges based on what we call folds and cuts. Intuititively, folds arise when a surface "folds" out of sight, which in turn may "cut" another surface from view. The classification depends on tangency between an edge tangent map and a shading flow field. Examples are included.
Folds and cuts: how shading flows into edges
Proceedings Eighth IEEE International Conference on Computer Vision. ICCV 2001 ; 2 ; 153-158 vol.2
2001-01-01
846788 byte
Conference paper
Electronic Resource
English
Folds and Cuts: How Shading Flows Into Edges
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