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论文类型：期刊论文

发表时间：2012-01-01

发表刊物：Journal of Networks

收录刊物：EI、Scopus

卷号：7

期号：7

页面范围：1046-1053

ISSN号：17962056

摘要：This paper presents a robust transmission strategy for wavelet based scalable bit stream over packet erasure channel. By taking the advantage of the bit plane coding and the multiple description coding, the proposed strategy adopts layered multiple description coding (LMDC) for the embedded wavelet coders to improve the error resistant capability of the important bit planes in the meaning of D(R) function. Then, the post-compression ratedistortion (PCRD) optimization process is used to improve the overall performance. At decoding, a simple error concealment technique is used to compensate the data loss. The proposed method is applied on Set Partitioning in Hierarchical Trees (SPIHT) coded image and the experimental results show graceful degradation for variable packet erasure rate. ? 2012 ACADEMY PUBLISHER.