A Two-Description Distributed Video Coding

In this paper, a two-description distributed video coding (2D-DVC) is proposed to address the robust video transmission of low-power captures. The odd/even frame-splitting partitions a video into two subsequences to produce two descriptions. Each description consists of two parts, where part 1 is a zero-motion based H.264 coded bitstream of a subsequence and part 2 is a Wyner-Ziv coded bitstream of the other subsequence. As the redundant part, the Wyner-Ziv coded bitstream guarantees the lost subsequence is recovered when one description is lost. On the other hand, the redundancy degrades the rate-distortion performance as no loss occurs. Therefore, a residual 2D-DVC is employed to reduce the redundancy, where the difference of two subsequences is Wyner-Ziv encoded to generate the part 2 in each description. The experimental results show that the proposed schemes achieve better performance than the referenced one especially when the video motion is low. Moreover, our schemes maintain low-complexity encoding.