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Carving from ray-tracing constraints: IRT-carving M. Andreetto,

Summary: Carving from ray-tracing constraints: IRT-carving

M. Andreetto,
S. Savarese,
P. Perona

Dept. Electrical Engineering
Beckman Institute
California Institute of Technology University of Illinois Urbana-Champaign
Pasadena, CA 91125 Urbana, IL 61801
marco,perona@caltech.edu silvio@uiuc.edu
We present a new algorithm for improving an available
(conservative) estimate of the shape of an object using con-
straints from ray-tracing. In particular, we exploit incoher-
ences between the lit portions of the object - detected on
a set of acquired images - and the shadows that the cur-
rent estimate casts on itself. Whenever a contradiction is
found the current estimate is modified in order to remove
the inconsistency. Sufficient conditions for the correctness


Source: Abu-Mostafa, Yaser S. - Department of Mechanical Engineering & Computer Science Department, California Institute of Technology


Collections: Computer Technologies and Information Sciences