Journal
2012 IEEE INTERNATIONAL CONFERENCE ON MULTIMEDIA AND EXPO WORKSHOPS (ICMEW)
Volume -, Issue -, Pages 617-622Publisher
IEEE
DOI: 10.1109/ICMEW.2012.113
Keywords
Lossless Coding; Stereo Disparity Images; Context-Coding; Disparity Warping; 3DTV
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Efficient compression of disparity data is important for accurate view synthesis purposes in multi-view communication systems based on the texture plus depth format, including the stereo case. In this paper a novel technique for lossless compression of stereo disparity images is presented. The coding algorithm is based on bit-plane coding, disparity prediction via disparity warping and context-based arithmetic coding exploiting predicted disparity data. Experimental results show that the proposed compression scheme achieves average compression factors of about 48:1 for high resolution disparity maps for stereo pairs and outperforms different standard solutions for lossless still image compression. Moreover, it provides a progressive representation of disparity data as well as a parallelizable structure.
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