huidu.zip_彩色图像转换_转换成灰度

clear all; close all; I=imread('onion.png'); J=rgb2gray(I); gray=mean2(J) rgb=mean2(I) r=mean2(I(:, :, 1)) g=mean2(I(:, :, 2)) b=mean2(I(:, :, 3)) figure; subplot(121); imshow(uint8(I)); subplot(122); imshow(uint8(J));