传统的边缘检测方法是对原始图像中像素的某小邻域来构造检测算子，它是采用锐化算子(如梯度算子、 拉普拉斯算子)进行的。图像的边缘检测是通过模板作为核与图像中的每一个像素点做卷积和运算，然后选取合适的阈值以提取边缘。-Traditional edge detection method is the original image in a pixel neighborhood operator to construct, it is a sharpening operator (such as the gradient operator, Laplacian) carried out. Image Edge Detection through the template image as a nuclear and each pixel convolution and the operation done, and then select a suitable threshold to extract the edge.