Improved low delay distributed video coding

Hongbin Liu, Yongpeng Li, Xianming Liu, Siwei Ma, Debin Zhao, Wen Gao

Abstract: This paper proposes an image partition based approach to enhance side information quality in low delay distributed video coding (DVC). The proposed method employs a checkerboard pattern to group blocks of the Wyner-Ziv frame into two sets, where one set is DPCM encoded and the other set is DVC encoded. These two sets are encoded independently and decoded successively. At decoder, DPCM set will be first reconstructed. Then the temporal concealment tool, such as boundary matching algorithm, is performed to conceal blocks in the DVC set. An improved side information is subsequently obtained for DVC set, based on which a higher compression can be achieved. Simulation results indicate that a more promising performance can be achieved when compared with existing motion extrapolated approach.