、 为权值， 为待处理像素的上下左右四个邻域像素值的集合， 表示待处理

、 为权值， 为待处理像素的上下左右四个邻域像素值的集合， 表示待处理像素对角线的四个点集合。用边缘检测算法计算出像素值的梯度 ，可将其视为信息跳变率。定义图像像素的最大差别值 ：

結果 (英文) 1:

, As weights, to handle pixels around pixel values of the set of four neighbourhoods, represents a collection of pixels to be processed four points on a diagonal. Gradient edge detection algorithm is used to calculate the pixel values can be considered as information jump rate. Defines maximum difference values of image pixels:

結果 (英文) 2:

, Is the weight value, which is the set of vertical and horizontal pixel values ​​of four neighborhood pixel to be processed, a diagonal line represents a pixel to be processed set of four points. Using gradient edge detection algorithm to calculate pixel values, which can be considered as transition rate information. The biggest difference between the definition of image pixel values:

結果 (英文) 3:

Weight, for, as the pixels to be processed around the top four neighborhood pixel value set, said to be four bit processing pixel diagonal set. To calculate the gradient of pixel values in the edge detection algorithm, it can be regarded as the hopping rate. The biggest difference between the definition of image pixel value: