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A uni ed di erential geometric framework for estimation of local surface s h a p e and orientation from projective texture distortion is proposed, based on a differential version of the texture stationarity assumption introduced by Malik and Rosenholtz. This framework allows the information content of the gradient of any texture descriptor de ned i n a l o cal coordinate fra m e t o b e characterized in a very compact form. The analysis encompasses both full a ne texture descriptors and thedoi:10.1109/iccv.1995.466865 dblp:conf/iccv/Garding95 fatcat:7uqwhzseg5hz3bhecv44yjv6y4