Shape from Multiple Cues: Integrating Local Brightness Information

In this paper, a novel approach to shape from multiple cues is further refined and applied to the task of combining contours with local brightness information. The approach, furtheron called the sculptor's principle, does not attempt to construct an 'optimum' solution but rather finds an enclosing volume that must contain the true solution. Shape from contours algorithms only provide accurate results for points on the convex hull of object. The shape ambiguity at concave parts, however, has to be removed by integrating complementary shape cues. This is addressed by a new idea of how to exploit the local brightness information, the luminance, for reconstruction purposes. The shape from luminance algorithm is illustrated on the enclosing volume of a dummy.