Dense disparity MAP representations for stereo image coding

Authors:
M. Kaaniche;W. Miled;B. Pesquet-Popescu;A. Benazza-Benyahia;J.-C. Pesquet
Affiliations:
Telecom ParisTech, Signal and Image Proc. Dept., Paris, France and SUP'COM, URISA, Cité Technologique des Communications, Tunisia;Telecom ParisTech, Signal and Image Proc. Dept., Paris, France;Telecom ParisTech, Signal and Image Proc. Dept., Paris, France;SUP'COM, URISA, Cité Technologique des Communications, Tunisia;Université Paris-Est, IGM and UMR, CNRS, Marne-la-Vallée, France
Venue:
ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
Year:
2009

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Abstract

Research in stereo image coding has focused on the disparity estimation/ compensation process to exploit the cross-view redundancies. Most of the reported methods use a classical block-based technique in order to estimate the disparity field. However, this estimation technique does not always provide an accurate disparity map, which may affect the disparity compensation step. In this paper, we propose to use an estimation method that produces a dense and smooth disparity map. Then, on the one hand, this map is segmented and efficiently coded by exploiting the high correlation between neighboring disparity values. On the other hand, we integrate the disparity information into a vector lifting scheme for stereo image coding. Experimental results indicate that the proposed coding scheme outperforms the conventional methods employing a block-based disparity estimation.