indextogray.m

来自「Index to gray conversion in matlab」· M 代码 · 共 18 行

load trees
I = ind2gray(X,map);
imshow(X,map)
figure,imshow(I)

%%%%%%%%%%%%%%%%%%%
I = imread('cameraman.tif');
[X, map] = gray2ind(I, 16);
imview(X, map); 

%%%%%%%%%%%%%%%%
I = imread('rice.png');
J = filter2(fspecial('sobel'),I);
K = mat2gray(J);
imview(I), imview(K)