img=imread('cameraman.tif');
[Gx,Gy]=imgradientxy(img,'sobel');
%Uncomment the code below to visualize Gx and Gy
figure
imshowpair(Gx,Gy,'montage')
title(' Directional Gradients, Gx and Gy ,using Prewitt method')
%Uncomment the code below to visualize Gmag and Gdir
imshowpair(Gx,Gy,'montage')
title( 'Gradient Magnitude (Left) and Gradient Direction (Right)')
[Gmag,Gdir] = imgradient(Gx,Gy);
imshowpair(Gmag,Gdir,'montage')
title('Gradient Magnitude (Left) and Gradient Direction (Right)')
