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Optical Engineering • Open Access

Near-real-time stereo matching method using temporal and spatial propagation of reliable disparity
Author(s): Sungil Kang; Hyunki Hong

Paper Abstract

A stereo approach to resolve the occlusion problem in stereo video sequence is introduced. We define a measure to evaluate the reliability of an initial disparity in combination with a left-right consistency check. An initial matching cost volume is computed with an absolute difference-census measure. In the spatial propagation stage, the outlier with a low reliability value is replaced/updated with the reliable disparity information in the support region. Because previous methods establish correspondence on a per-frame basis, they cannot obtain temporally coherent disparity results over a stereo sequence. In order to overcome the occlusion problem in a dynamic situation, we employ the modified codebook with color, disparity, reliability, array of the matching cost, and final access time in a temporal propagation procedure. Experimental results show that the proposed algorithm with general-purpose computing on graphics processing units (GPGPU) provides better performance when applied to disparity maps of real-time indoor/outdoor scenes.

Paper Details

Date Published: 24 June 2014
PDF: 10 pages
Opt. Eng. 53(6) 063107 doi: 10.1117/1.OE.53.6.063107
Published in: Optical Engineering Volume 53, Issue 6
Show Author Affiliations
Sungil Kang, Chung-Ang Univ. (Korea, Republic of)
Hyunki Hong, Chung-Ang Univ. (Korea, Republic of)

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