Nonlinear Multiresolution: A Shape-from-Shading Example Shmuel Peleg and Gad Ron

the algorithm towards the of the uarameters to he computed, multiresol~tion should be used with special care. The obvious image reduction is incorrect, and the solution ou the reduced image isa bad estimate of the higher resolution solution. Shape-from-shadi&is treated in this correspondence as an example of such difficulties. Reduction of the gray level-resolution of an image, as often done in image “pyramids, ” does not correspond to images obtained by reducing the shape resolunbn: the 3-D resolution of an object The correspondence between gray level and shape resolutions is therefore diiussed, and a method is proposed for using multinxolutlon approach in the case of shape-from-shading. It is concluded that a study of the relation between image resolution and estimated-uarameter resolution should be done before using any Index Term.+-Multiresolution, pyramids, shape-from-shading