Depth computations from polyhedral images

摘要

A method is developed for the computation of depth maps, modulo scale, from one single image of a polyhedral scene. Only affine shape properties of the scene and image are used, no metric information. Results from simple experiments show good performance, both concerning exactness and robustness. It is also shown how the underlying theory may be used to single out and characterize certain singular situations that may occur in machine interpretation of line drawings.