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This paper proposes an error resilient video coding algorithm in H.264/AVC for packet-loss networks, which involves an inter frame prediction scheme and a joint source-channel rate-distortion optimization (RDO) function for both inter mode decision and motion estimation. The suggested inter frame prediction and joint source-channel RDO function can significantly reduce the error propagation effect...
This paper presents a joint source coding, channel coding, and flash memory channelization design framework to obtain optimized tradeoffs among energy consumption, bit rate, and end-to-end distortion (i.e., optimal E-R-D tradeoff space) for embedded and mobile devices with limited power source and abundant flash memory storage capacity. The optimal E-R-D tradeoff space enables embedded and mobile...
This paper proposes an iterative search strategy for joint motion and disparity estimation in order to eliminate the temporal and inter-view redundancies of multiview video. This iterative search strategy can work with an adaptive search range adjustment through a confidence measure of a loop constraint to obtain both motion and disparity vectors simultaneously with low complexity. Experimental results...
Traditionally, block-based motion estimation (ME) searches for the best motion vector (MV) for one block at a time based upon a pre-defined ME cost. The ME cost is often a function of the best MV and its predictor (MVP). In H.264/AVC, MVP of a block is calculated from MVs of its neighboring blocks in the past. Therefore, the ME decision of a current block is affected by the neighboring blocks in the...
Stereo video technology is an active research area in current video signal processing filed. More and more researchers are engaged in this field. Based on the Joint Multiview Video Model proposed by JVT (Joint Video Team), three existing stereo video coding schemes are studied in this paper. An improved scheme is proposed after the stereo video MacroBlock types are analyzed. The experimental results...
The allowable computational complexity of video encoding is limited in a power-constrained system. Different video frames are associated with different motions and contexts, and so are associated with different computational complexities if no complexity control is utilized. Variation in computational complexity leads to encoding delay jittering. Typically motion estimation (ME) consumes much more...
In this paper, a weighted joint prediction mode is proposed. It not only compares the motion prediction and disparity prediction, but also compares the motion prediction, disparity prediction and the weighted joint prediction. Then, the prediction mode which leads the least prediction distortion is chosen as inter prediction. Experimental results show that the proposed encoding scheme can solve the...
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