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A Disparity Estimation Method Based on Curvature and Belief Propagation
Pages: 1154-1160
Year: Issue:  12
Journal: Pattern Recognition and Artificial Intelligence

Keyword:  Disparity EstimationCurvatureBelief PropagationOptical Distortion;
Abstract: The current widely used matching costs are sensitive to complex optical distortions, such as vignetting. By analyzing the camera model,the robustness of the curvature-based matching cost against the vignetting effect is proved. Then,the integral image is used to compute the curvature-based matching cost so that the speed of the algorithm is improved significantly. Finally,a regularization term is designed based on curvature constraint,and thus the over-smoothing of the disparity map is avoided by restricting the belief propagation in the depth discontinuity area. Experimental results verify the effectiveness of the proposed method.
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