An iterative side information refinement technique for transform domain Distributed Video Coding

摘要

Distributed video coding (DVC), has been an interesting alternative to the conventional video coding for a number of applications because of its flexibility for designing extremely low complexity video encoders. The performance of DVC can be improved by only modifying the decoder to keep the encoder complexity at the same level. In this paper, we propose a novel modified framework for a DVC codec considering an iterative side information refinement technique. Refinement is performed at the decoder, first with the help of the decoded DC frame and then considering partially decoded frame using previously refined side information. By iteratively refining the side information, a significant improvement has been achieved in the rate distortion performance.