At first, basic principles and common technology of VQ are brief introduced, and a new rapid and high-quality VQ initial codebook generating method, Adaptive Decision- Directed Clustering (ADDC) is presented.
论文简要介绍了矢量量化的基本原理和在图像编码领域中的常用技术，进而提出了一种快速、高效的初始码书生成方法——自适应决策导向聚类算法。
参考来源 - 高性能图像编码研究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
最后，针对LBG算法对初始码书敏感这一缺陷给出了一些改进方向。
At last, some improved methods aimed at the defects of the sensitivity to the initial codebook of LBG algorithm are presented in the paper.
矢量量化的初始码书设计是很重要的，影响或决定着其后码书形成算法的迭代次数和最终的码书质量。
In vector quantization, the initial codebook design influences or determines The Times of iteration of codebook training method and the quality of codebook. So it is very important for VQ codebook.
高斯·马尔科夫序列实验表明，该算法较好地实现了全局最优，并有助于克服对初始码书较为敏感的缺点。
The experiments of Gauss Markov sequences show that the algorithm has better achieved the global optimal point and helps overcome the shortcoming of the sensitivity to initial codebook.
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