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Stereo Matching with Nonlinear Diffusion
Authors:Scharstein  Daniel  Szeliski  Richard
Affiliation:(1) Department of Mathematics and Computer Science, Middlebury College, Middlebury, VT, 05753. E-mail: schar@middlebury.edu;(2) Microsoft Research, One Microsoft Way, Redmond, WA, 98052-6399
Abstract:One of the central problems in stereo matching (and other image registration tasks) is the selection of optimal window sizes for comparing image regions. This paper addresses this problem with some novel algorithms based on iteratively diffusing support at different disparity hypotheses, and locally controlling the amount of diffusion based on the current quality of the disparity estimate. It also develops a novel Bayesian estimation technique, which significantly outperforms techniques based on area-based matching (SSD) and regular diffusion. We provide experimental results on both synthetic and real stereo image pairs.
Keywords:stereo matching  variable-sized support region  nonlinear diffusion  Bayesian estimation
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