应用log算法进行图像的边缘检测，log算法是一种基于灰度值的二阶导数来进行边缘检测的，通过检测零点来进行边缘检测-Application log algorithm for image edge detection, log-based algorithm is a gray value of the second derivative for edge detection, by detecting zero for edge detection

此程序实现对一副图像的LOG梯度边缘检测方法-This procedure to achieve an image of the gradient edge detection method LOG