A novel error resilient scheme for waveletbased image coding over packet networks

作者：Sun WenZhu^*; Wang HongYu; Qian DaXing

来源：Journal of Networks, 2012, 7(7): 1046-1053.

DOI：10.4304/jnw.7.7.1046-1053

• Bit planes
• Bitplane coding
• Data loss
• Embedded wavelet coder
• Error concealment technique
• Error resistant
• Error-resilient
• Graceful degradation
• MDC
• Multiple description coding
• Optimization process
• Packet erasure channels
• Rate distortions
• Robust transmission
• Scalable bit-streams
• Set partitioning in hierarchical tree
• SPIHT
• Wavelet-based image coding

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.

• 出版日期2012