课设lsb算法信息隐藏课设LSB算法实验步骤隐藏提取及测试（1）隐藏算法，保存在hide_lsb.m文件中。function o = hide_lsb(block, data, I)%function o = hide_lsb(block, data, I)%block:the minimal ceil to hide%data:the information%I:source imagesi = size(I);lend = length(data);%将图像划分为M*N个小块N = floor(si(2) / block(2);M = min(floor(si(1) / block(1), ceil(lend / N);o = I;fori = 0 : M-1%计算每小块垂直方向起止位置rst = i * block(1) + 1;red = (i + 1) * block(1);for j = 0 : N-1%计算每小块隐藏的秘密信息的序号idx = i * N + j + 1;if
