matlab 彩色图和热力图叠加显示

im = imread('color.jpg'); %彩色图

im = double(im);

gray = imread('gray.jpg'); % 热力图

gray = double(gray);

cmap = colormap(jet(256));

rgb = ind2rgb(gray,cmap);

rgb = rgb * 255;

figure(1);

imshow(uint8(im*0.6+rgb*0.4),[]);