Vector quantization (VQ) is one of the lossy data compression techniques[1], [2] and has been used in number of applications, like pattern recognition [3], speech recognition and face detection [4], [5], image segmentation [6-9], speech data

A variety of encoding methods are available in literature: Partial Distortion search (PDS)[23], nearest neighbor search algorithm based on orthonormal transform (OTNNS) [24]. Partial Distortion Elimination (PDE) [25], Kekre’s fast search algo

采用矢量量化算法实现图像压缩, 代码采用C语言编写。(VQ algorithms for image compressing)