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Carving from Ray-Tracing Constraints: IRT-Carving

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3 Author(s)
Andreetto, M. ; Dept. Electr. Eng., California Inst. of Technol., Pasadena, CA ; Savarese, S. ; Perona, P.

We present a new algorithm for improving an available {conservative) estimate of the shape of an object using constraints from ray-tracing. In particular, we exploit incoherences between the lit portions of the object - detected on a set of acquired images - and the shadows that the current 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 of the algorithm and a discussion of their validity are provided. Finally, we describe a simple implementation of the method and present some preliminary experimental results from computer simulations.

Published in:

3D Data Processing, Visualization, and Transmission, Third International Symposium on

Date of Conference:

14-16 June 2006