对于一个图像处理系统来说，可以将流程分为三个阶段，在获取原始图像后，首先是图像预处理阶段、第二是特征抽取阶段、第三是识别分析阶段。图像预处理阶段尤为重要，如果这阶段处理不好，后面的工作根本无法展开。-For an image processing system, the process is divided into three stages, after obtaining the original images, first of all is image preprocessing stage, the second is feature extraction stage, and the third is to identify the analysis phase. The image preprocessing stage is particularly important, if it is not handled well, can not be carried out behind the work at all.