www.gusucode.com > images 案例代码 matlab源码程序 > images/CalculateDirectionalGradientsUsingPrewittExample.m
%% Calculate Directional Gradients % %% % Read image into workspace. I = imread('coins.png'); %% % Calculate gradient magnitude and gradient direction using Prewitt % gradient operator. [Gx, Gy] = imgradientxy(I,'prewitt'); figure; imshowpair(Gx, Gy, 'montage'); title('Directional Gradients: x-direction, Gx (left), y-direction, Gy (right), using Prewitt method') axis off;