color_image.zip_色度图_色调图

clear all;clc; %色调、饱和度矩阵 a=1:256; m=size(a,1); n=size(a,2) ; M=256;N=1; midx=(1:m)'*ones(1,M); nidx=(1:n)'*ones(1,N); B=a(midx,nidx)/256; C=1-B; %亮度矩阵 a=ones(1,256); m=size(a,1); n=size(a,2) ; M=256;N=1; midx=(1:m)'*ones(1,M); nidx=(1:n)'*ones(1,N); D=a(midx,nidx); %合成HSB空间矩阵 A(:,:,1)=B; A(:,:,2)=C'; A(:,:,3)=D; %转换为RGB空间 A=hsv2rgb(A); figure,imshow(A) imwrite(A,'PictureWithBrightness1.bmp'); %亮度变为0.8 A(:,:,1)=B; A(:,:,2)=C'; A(:,:,3)=0.5*D; A=hsv2rgb(A); figure,imshow(A) imwrite(A,'PictureWithBrightness0.5.bmp');