matlab之PS算法小程序（线性加深，线性减淡，变亮，变暗）

原理见http://blog.csdn.net/matrix_space/article/details/22425209

[filename,pathname] = uigetfile('*.jpg;*.bmp','选择图片','E:\pictures\For_Project\Matlab');
imgaepath = strcat(pathname,filename);
I1 = imread(imgaepath);

[filename,pathname] = uigetfile('*.jpg;*.bmp','选择图片','E:\pictures\For_Project\Matlab');
imgaepath = strcat(pathname,filename);
I2 = imread(imgaepath);

I1 = (imresize(I1,[600,800]));
I2 = (imresize(I2,[600,800]));

d = 0.5;
C = imlincomb(1,I1,1,I2,-255);

figure(1),set(gcf,'Name','线性加深模式');
subplot(1,3,1),imshow(I1),title('图片1');
subplot(1,3,2),imshow(I2),title('图片2');
subplot(1,3,3),imshow(C),title('图片3');

[filename,pathname] = uigetfile('*.jpg;*.bmp','选择图片','E:\pictures\For_Project\Matlab');
imgaepath = strcat(pathname,filename);
I1 = imread(imgaepath);

[filename,pathname] = uigetfile('*.jpg;*.bmp','选择图片','E:\pictures\For_Project\Matlab');
imgaepath = strcat(pathname,filename);
I2 = imread(imgaepath);

I1 = (imresize(I1,[600,800]));
I2 = (imresize(I2,[600,800]));

d = 0.5;
C = imlincomb(1,I1,1,I2,0);

figure(1),set(gcf,'Name','线性减淡模式');
subplot(1,3,1),imshow(I1),title('图片1');
subplot(1,3,2),imshow(I2),title('图片2');
subplot(1,3,3),imshow(C),title('图片3');

[filename,pathname] = uigetfile('*.jpg;*.bmp','选择图片','E:\pictures\For_Project\Matlab');
imgaepath = strcat(pathname,filename);
I1 = imread(imgaepath);

[filename,pathname] = uigetfile('*.jpg;*.bmp','选择图片','E:\pictures\For_Project\Matlab');
imgaepath = strcat(pathname,filename);
I2 = imread(imgaepath);

I1 = (imresize(I1,[600,800]));
I2 = (imresize(I2,[600,800]));

for i = 1:600
    for j = 1:800
        if(I1(i,j)>I2(i,j))C(i,j)=I1(i,j);
            else C(i,j)=I2(i,j);
        end
    end
end

figure(1),set(gcf,'Name','变亮模式');
subplot(1,3,1),imshow(I1),title('图片1');
subplot(1,3,2),imshow(I2),title('图片2');
subplot(1,3,3),imshow(C),title('图片3');