www.pudn.com > segment_ga.rar > hist2.m

%%初始部分，读取图像及计算相关信息 
 
clear; 
close all; 
clc; 
 
%format long; 
 
I=imread('Lenna.bmp'); 
 
 
%windowsize=3; 
I_temp=I; 
for i=2:255 
    for j=2:255 
        I_temp(i,j)=round(mean2(I(i-1:i+1,j-1:j+1))); 
    end 
end 
I_average=I_temp; 
 
 
I_p=I; 
I_average_p=I_average; 
hist_2d(1:256,1:256)=zeros(256,256); 
for i=1:256 
    for j=1:256 
        hist_2d(I_p(i,j),I_average_p(i,j))=hist_2d(I_p(i,j),I_average_p(i,j))+1; 
    end 
end 
 
total=256*256; 
 
hist_2d_1=hist_2d/total; 
 
 
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