clear all
clc
A = imread('lena.jpg');
R = A(:,:,1);
G = A(:,:,2);
B = A(:,:,3);
imhist(R);? ? %%%顯示直方圖
figure(2),imhist(G);
figure(3),imhist(B);

?

%%%% lena 與 im1.jpg
lena = imread('lena.jpg');
A = lena(:,:,1);
B = lena(:,:,2);
C = lena(:,:,3);
im1 = imread('im1.jpg');
A1 = im1(:,:,1);
A2 = im1(:,:,2);
A3 = im1(:,:,3);
a1 = imhist(A1);
b1 = imhist(A2);
c1 = imhist(A3);
B1 = histeq(A,a1); %%%將lena與提取出的直方圖進行匹配
B2 = histeq(B,b1);
B3 = histeq(C,c1);
I(:,:,1) = B1;
I(:,:,2) = B2;
I(:,:,3) = B3;
figure(1),imshow(I);

?

%%%lena與im2.jpg
lena = imread('lena.jpg');
A = lena(:,:,1);
B = lena(:,:,2);
C = lena(:,:,3);
im1 = imread('im2.jpg');
A1 = im1(:,:,1);
A2 = im1(:,:,2);
A3 = im1(:,:,3);
a1 = imhist(A1);
b1 = imhist(A2);
c1 = imhist(A3);
B1 = histeq(A,a1);
B2 = histeq(B,b1);
B3 = histeq(C,c1);
I1(:,:,1) = B1;
I1(:,:,2) = B2;
I1(:,:,3) = B3;
figure(2),imshow(I1);

總結(jié)

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