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作者:

Shi, Yunhui (Shi, Yunhui.) (学者:施云惠) | Yin, Baocai (Yin, Baocai.) (学者:尹宝才) | Kong, Dehui (Kong, Dehui.) (学者:孔德慧) | Lu, Tailong (Lu, Tailong.)

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摘要:

Multiple description coding (MDC) is a way of trading off coding gain with robustness to channel errors. This paper presents a novel and efficient two-description image coding scheme in wavelet domain. Here, the two-layered MDC method is adopted based on the feature of wavelet coefficients. Firstly, the low-frequency wavelet coefficients are partitioned into two new correlated groups as two basic descriptions with pairwise correlating transform (PCT). Secondly, we can get two enhanced descriptions from the high-frequency wavelet subbands of the highest-level decomposition by adaptive down-sampling. Finally, four template operators are adopted to detect the texture direction of high-frequency subbands, and we use the Wavelet Domain Interpolation for tree Reconstruction (WDIR) to conceal coefficients loss in Wavelet-Trees with the texture direction when one enhanced description lost during transmission. Experimental results demonstrate that the proposed MDC scheme can achieve good coding performance. © 2009 Springer-Verlag Berlin Heidelberg.

关键词:

Codes (symbols) Coding errors Forestry Image coding Interpolation Pulse code modulation Signal sampling Textures Wavelet decomposition

作者机构:

  • [ 1 ] [Shi, Yunhui]Department of Computer Science and Technology, Beijing University of Technology, Beijing, China
  • [ 2 ] [Yin, Baocai]Department of Computer Science and Technology, Beijing University of Technology, Beijing, China
  • [ 3 ] [Kong, Dehui]Department of Computer Science and Technology, Beijing University of Technology, Beijing, China
  • [ 4 ] [Lu, Tailong]Department of Computer Science and Technology, Beijing University of Technology, Beijing, China

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ISSN: 0302-9743

年份: 2009

卷: 5879 LNCS

页码: 1257-1262

语种: 英文

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SCOPUS被引频次: 1

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