调色板程序及其结果1.嵌入秘密信息
clc;
clear;
%读入载体图像
[x,map] = imread('lenaindex.bmp','bmp');
wx=x;
[row col]=size(wx);
wmap=map;
msgfid=fopen('hidden.txt','r');
[msg,count]=fread(msgfid);2.提取秘密信息
clc;
clear;
%读入载体图像
[x,map] = imread('lenaindex1.bmp','bmp');
key=1234;
count=24;
for i=1:count
msg(i,1)=0;
end
oplength=64;
[row col]=ran
