LVQ based distributed video coding with LDPC in pixel domain

Authors:
Anhong Wang;Yao Zhao;Hao Wang
Affiliations:
Institute of Information Science, Beijing Jiaotong University, Beijing, China and Taiyuan University of Science and Techonology, Taiyuan, China;Institute of Information Science, Beijing Jiaotong University, Beijing, China;Institute of Information Science, Beijing Jiaotong University, Beijing, China
Venue:
PRICAI'06 Proceedings of the 9th Pacific Rim international conference on Artificial intelligence
Year:
2006

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Abstract

Presently, distributed source coding (DSC) and distributed video coding (DVC) are given high attention in sensor network and other multimedia transmission. That is due to their contribution to easy encoding and robust multimedia communication. In this paper, we propose a new DVC framework where two LVQ (lattice vector quantization) and a rate-variable LDPC (low-density parity-check) are exploited. In both LVQ and LDPC, we use the interpolated from decoded frames as side information to help coding. Because of LVQ's exploitation to dependence of source and the better error-correcting capacity of LDPC, our system achieves more than 1 dB improvement in PSNR than the referenced. Meanwhile, the property of low-complexity encoding is still preserved.