canny边缘检测算法在opencv的简单实现，很实用的代码

能够进行图像的边缘检测，采用canny算法，opencv代码只有短短几行，简单实用-Capable of image edge detection using canny algorithm, opencv code for only a few lines, simple and practical

实用的matlab代码：中值滤波器；用Sobel算子和拉普拉斯对图像锐化；梯度算子检测边缘；LOG算子检测边缘；Canny算子检测边缘-Practical matlab code: median filter Sobel operator and Laplacian image sharpening gradient edge detection operator LOG operator to detect the edges Canny edge detection operator

可简单方便实现图像边界区域选取的工作，适用于初学者和毕设(It is simple and convenient for the selection of image boundary area.)