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;