特征检测与匹配是Computer Vision 应用总重要的一部分，这需要寻找图像之间的特征建立对应关系。点，也就是图像中的特殊位置，是很常用的一类特征，点的局部特征也可以叫做“关键特征点”(keypoint feature)，或“兴趣点”(interest point)，或“角点”(conrner)。Harris角点检测-Feature detection and matching is an important part of the overall application of Computer Vision, which need to find a feature image corresponding relationship between the establishment. Point, which is the image of a particular location, it is very common type of feature, local feature points can also be called　feature points　(keypoint feature), or　points of interest　(interest point), or　corner　(conrner). Harris corner detection