A new method of vector classification is presented to improve the efficiencyof forming the original codebook through reduce the vector number in thetraining sets. This method takes the advantage of direction and correlationbetween wavelet coefficients.
一方面，利用人眼的视觉特性，对训练集的矢量进行分类，去掉部分矢量，减小初始码书生成时的计算量。
参考来源 - 基于小波变换与矢量量化的图像压缩算法·2,447,543篇论文数据，部分数据来源于NoteExpress
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