Distributed Coding Scheme for Multi-view Video through Efficient Side Information Generation

In this paper, a distributed image coding scheme for multi-view video through an efficientgeneration of side information is proposed. A distributed video coding technique corrects the errors inthe side information, which is generated with the original image, by using the channel codingtechnique at the decoder. Therefore, the more correct the generated side information is, the better theperformance of distributed video coding. The proposed technique is to apply the distributed videocoding schemes to the image coding for multi-view video. It generates side information by selectivelyand efficiently using both 3-dimensional warping based on the depth map with spatially adjacentframes and motion-compensated temporal interpolation with temporally adjacent frames. In thisscheme the difference between the adjacent frames, the sizes of the motion vectors for the adjacentblocks, and the edge information are used as the selection criteria. From the experiments, it wasobserved that the quality of the side information generated by the proposed technique was improved bythe average peak signal-to-noise ratio of 0.97dB than the one by motion-compensated temporalinterpolation or 3-dimensional warping. The result from analyzing the rate-distortion curves revealedthat the proposed scheme could reduce the bit-rate by 8.01% on average at the same peak signal-tonoiseratio value, compared to previous work. KCI Citation Count: 0