subplot(2,2,1);imshow(input);title('原始图像');water=imread('water.bmp');subplot(2,2,2);imshow(water);title('水印');input=double(input);water=double(water);inputr=input(:,:,1);waterr=water(:,:,1);inputg=input(:,:,2);waterg=water(:,:,2);inputb=double(input(:,:,3));waterb=double(water(:,:
