journal6 ›› 2000, Vol. 21 ›› Issue (2): 80-81.

• 科研简报 • 上一篇    下一篇

矢量量化的投影算法

  

  1. (邵阳师专物理系, 湖南 邵阳 422000)
  • 出版日期:2000-06-15 发布日期:2013-01-16
  • 作者简介:赵乘麟( 1965~ ) ,男, 湖南省邵东县人,邵阳师专物理系讲师,主要从事多媒体技术研究

Projective Algorithm for Vector Quantization

  1. ( Department of Physics, Shaoyang Teachers college, Shaoyang 422000,Hunan China)
  • Online:2000-06-15 Published:2013-01-16

摘要:将矩阵的投影引入到矢量量化中, 达到了在搜索最佳匹配码字的过程中首先在降维空间中将一些侯选码字排除,其中利用了最佳匹配码字的和待编码的矢量的均值和方差与MSE 距离之间的关系不等式.[1]实际结果表明约 98%的侯选码字被排除,只有2%左右的码字需要直接计算其欧氏距离.

关键词: 矢量量化, 投影, 侯选码字

Abstract: In this paper, we introduce the projection of a matrix into the vector quantization. In the process of searching the best matching code word, some candidate codewords are first discarded in the dimensionaligy reduced space. The inequality between the MSE distance and the mean value or the variance of the candidate codeword is used in the elimination process.The experiment shows 98% of the candidate codewords is discarded, only about 2% of the candidate code words has to compute the MSE distance.

Key words: vector quantization, projection, candidate code word

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