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新的学习矢量量化初始码书算法 被引量:12

A New Initial Codebook Algorithm of Learning Vector Quantization
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摘要 针对原有随机数设置法、训练矢量集随机抽取法和LBG分裂法等初始码书算法存在码矢利用率较低、运算量大和与信源匹配程度不高等不足,提出了一种新的分离平均法,并应用到基于自组织特征映射算法(SOM)的学习矢量量化(LVQ)中.图像矢量量化的实验表明,分离平均初始码书算法具有无效码矢数量少和码书性能高、运算量小、实现简单等优点. In vector quantization(VQ), the initial codebook design is very important for VQ codebook performances. To overcome disadvantages of existing initial codebook algorithms, a new separating mean algorithm for learning vector quantization(LVQ)based upon self-organizing feature maps(SOM) was proposed. Experimental results for image VQ show that new initial codebook algorithm is better than random and splitting algorithm.
出处 《北京邮电大学学报》 EI CAS CSCD 北大核心 2006年第4期33-35,共3页 Journal of Beijing University of Posts and Telecommunications
基金 国家自然科学基金项目(60271014)
关键词 矢量量化 自组织特征映射 图像编码 learning vector quantization self-organizing feature maps image coding
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参考文献11

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