18 January 2010 Phase refinement for image prediction based on sparse representation
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Abstract
In this work, we propose the use of sparse signal representation techniques to solve the problem of closed-loop spatial image prediction. The reconstruction of signal in the block to predict is based on basis functions selected with the Matching Pursuit (MP)i terative algorithm, to best match a causal neighborhood. We evaluate this new method in terms of PSNR and bitrate in a H.264 / AVC encoder. Experimental results indicate an improvement of rate-distortion performance. In this paper, we also present results concerning the use of phase correlation to improve the reconstruction trough shifted-basis functions.
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Aurélie Martin, Jean-Jacques Fuchs, Christine Guillemot, Dominique Thoreau, "Phase refinement for image prediction based on sparse representation", Proc. SPIE 7543, Visual Information Processing and Communication, 75430H (18 January 2010); doi: 10.1117/12.838911; https://doi.org/10.1117/12.838911
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