[IPOL discuss] [IPOL announce] new article: Bilaterally Weighted Patches for Disparity Map Computation

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Thu Mar 12 10:51:46 CET 2015

A new article is available in IPOL: http://www.ipol.im/pub/art/2015/123/

Laura Fernández Julià, and Pascal Monasse,
Bilaterally Weighted Patches for Disparity Map Computation,
Image Processing On Line, 5 (2015), pp. 73–89.

Visual correspondence is the key for 3D reconstruction in binocular 
stereovision. Local methods perform block-matching to compute the 
disparity, or apparent motion, of pixels between images. The simplest 
approach computes the distance of patches, usually square windows, and 
assumes that all pixels in the patch have the same disparity. A 
prominent artifact of the method is the "foreground fattening effet" 
near depth discontinuities. In order to find a more appropriate support, 
Yoon and Kweon introduced the use of weights based on color similarity 
and spatial distance, analogous to those used in the bilateral filter. 
This paper presents the theory of this method and the implementation we 
have developed. Moreover, some variants are discussed and improvements 
are used in the final implementation. Several examples and tests are 
presented and the parameters and performance of the method are analyzed.

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