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symmetrical reversible variable length code
相关语句
  相似匹配句对
     A Novel Symmetrical Reversible Variable-length Code Based on Cost-evaluating
     一种新型的可逆变长码——代价测评对称可逆变长码
短句来源
     A novel construction algorithm for symmetrical reversible variable length codes
     一种新的对称可逆变长码的构造方法
短句来源
     Therefore we name it quasi-reversible synchronized variable length code(QRSVLC).
     如果在用该码编码后的序列前中填加一同步字,则新序列可实现双向解码,故我们称之为准可逆同步变长码(QRSVLC)。
短句来源
     Character oriented Text Process on Variable-length Code
     基于变长码的面向字符文本处理方法
短句来源
     Analysis of Universal Variable Length Code in H.264 Draft
     H.264草案中的UVLC编码分析
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Reversible variable-length code has been adopted by H.263+ and MPEG-4 because of efficient error resilient capabilities. In the paper, a novel symmetrical reversible variable-length codes, cost-evaluating symmetrical reversible variable-length codes, were proposed. They can overcome the limitation of Takishima algorithm by appling adaptive thoughts. Finally, comparing the Hanmming distances of these codes, the theoretical...

Reversible variable-length code has been adopted by H.263+ and MPEG-4 because of efficient error resilient capabilities. In the paper, a novel symmetrical reversible variable-length codes, cost-evaluating symmetrical reversible variable-length codes, were proposed. They can overcome the limitation of Takishima algorithm by appling adaptive thoughts. Finally, comparing the Hanmming distances of these codes, the theoretical bounds of the codewords is explained.

因其良好的防误码扩散性能,可逆变长码已被采纳为H.263+和MPEG 4的标准。应用自适应的思想,由一个自定义的代价函数构建了一种新型的对称可逆变长码———代价测评对称可逆变长码,并从最小汉明距离的角度出发,阐述了代价测评对称可逆变长码性能优于Huffman码、TakishimaRVLCs和B2码的理论基础。

A novel construction algorithm for symmetrical Reversible Variable Length Codes(RVLC) is proposed based on the analysis of the symmetrical RVLC code tree,which is independent of the Huffman code.The algorithm adds all candidate codes into the queue after the minimum codeword length is obtained according to the symbol probability,then selects those which satisfy the codeword mechanism as symmetrical RVLCs.The result shows it can lead to a smaller average...

A novel construction algorithm for symmetrical Reversible Variable Length Codes(RVLC) is proposed based on the analysis of the symmetrical RVLC code tree,which is independent of the Huffman code.The algorithm adds all candidate codes into the queue after the minimum codeword length is obtained according to the symbol probability,then selects those which satisfy the codeword mechanism as symmetrical RVLCs.The result shows it can lead to a smaller average code length,and has the advantages of flexible codeword selection mechanism and easy realization.

在分析对称可逆变长码码树结构的基础上,提出了一种独立于Huffman码的对称可逆变长码构造算法.该算法根据符号概率求得对称可逆变长码的最小码字长度后,将所有候选码字依次存放到队列,选择其中符合码字选取机制的候选码字作为对称可逆变长码码字.实验表明,该算法能够得到较小的平均码长,并具有码字选取机制简单、实现复杂度小等优点.

In this paper, based on the concept of adaption, the Cost-Evaluating Symmetrical Reversible Variable Length Codes (C-E SRVLCs), which can be used for Joint Source Channel Coding (JSCC), are constructed through a user-defined cost function. The principle of C-E SRVLCs is explained and analyzed, and simulations are carried out for two common channels(BSC and AWGN). The results show that the codes are superior to the traditional separate codes, and may found applications in some...

In this paper, based on the concept of adaption, the Cost-Evaluating Symmetrical Reversible Variable Length Codes (C-E SRVLCs), which can be used for Joint Source Channel Coding (JSCC), are constructed through a user-defined cost function. The principle of C-E SRVLCs is explained and analyzed, and simulations are carried out for two common channels(BSC and AWGN). The results show that the codes are superior to the traditional separate codes, and may found applications in some areas.

应用自适应的思想,由一个自定义的代价函数构造出一种适合于实现联合编译码的变长码——代价测评对称可逆变长码。论述了代价测评对称可逆变长码的构造原理与性能分析,并在两种常用的通信信道(BSC及AWGN信道)中进行了仿真试验。结果表明,这种新型编码方式的性能优于一般的分离编译码方案,具有一定的使用价值。

 
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