轮廓提取的目的就是获得图像的外部特征,是进行图像分析的有用手段之一.二值图像轮廓提取的算法非常简单,就是掏空内部点:如果原图中有一点为黑,且它的8个相临点都是黑色时,则将该黑点删掉-Contour extraction is to obtain the purpose of the external characteristics of the image, is useful for image analysis means of the binary image contour extraction algorithm is very simple, the hollowed interior points: If the original point for the black, and 8 adjacent points are black, and delete the black spots