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Curved Mondrians: shading analysis of patterned objects 1
Author(s) -
Bischof Walter F.,
Ferraro Mario
Publication year - 1989
Publication title -
computational intelligence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.353
H-Index - 52
eISSN - 1467-8640
pISSN - 0824-7935
DOI - 10.1111/j.1467-8640.1989.tb00321.x
Subject(s) - shading , photometric stereo , piecewise , constant (computer programming) , albedo (alchemy) , surface (topology) , computer vision , mathematics , artificial intelligence , image (mathematics) , computer science , geometry , mathematical analysis , computer graphics (images) , art , performance art , art history , programming language
Most shape‐from‐shading methods assume that surface reflectance is constant within large image regions. This assumption is violated in natural scenes with objects made from different materials. We present a more general method for recovering shape from shading, assuming that surfaces are smooth and albedo is piecewise constant, as would be the case if a Mondrian image was painted on a smooth curved surface. Our method is based on combining Brooks and Horn's method for shape recovery with the recovery of albedo using stochastic relaxation.