摘要：
clear all;close all;clc;im=imread('2.png');im2=im;im1=rgb2ycbcr(im);%将图片的RGB值转换成YCbCr值%Lu=im1(:,:,1);Cb=im1(:,:,2);Cr=im1(:,:,3);[x y z]=size(im);tst=zeros(x,y);%计算Cb、Cr的均值Mb、Mr%Mb=mean(mean(Cb));Mr=mean(mean(Cr));%计算Cb、Cr的均方差%Db=sum(sum(Cb-Mb))/(x*y);Dr=sum(sum(Cr-Mr))/(x*y);%根据阀值的要求提取出near 阅读全文