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Adaptive descriptor-based robust stereo matching under radiometric changes
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DOI：10.1016/j.patrec.2016.04.015.png)
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In a real stereo vision system, the acquired stereo images suffer from varying radiometric changes due to illumination and camera parameter changes. Therefore, we propose an effective matching scheme created by building a content adaptive descriptor. Specifically, the descriptor reflects image contents and its element are adaptively weighted and applied to estimate the correct corresponding pixels based on the entropy energy function even under radiometric changes. For the performance evaluation, the proposed scheme is compared with the state-of-art algorithm using Middlebury and KITTI Vision stereo datasets that have radiometric changes. Specifically, 24 of 71 indoor image pairs in the Middlebury and 3 of 7 outdoor pairs are selected, respectively. Experimental result shows that the proposed method reports 6.23% bad pixel matching on average, but it outperforms state-of-the-art algorithms by reducing around 2% bad pixel matching error, which achieves about 16.5% performance improvement. (C) 2016 Elsevier B. V. All rights reserved.
Keyword:
Stereo matching
Radiometric changes
Descriptor
Illumination
Camera exposure
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