-
dsakf
% 文件名:randlsbget.m
% 程序员:余波
% 编写时间:2007.6.25
% 函数功能: 本函数将完成提取隐秘于上的秘密信息
% 输入格式举例:result=( scover.jpg ,56, secret.txt ,2001)
% 参数说明:
% output是信息隐藏后的图象
% len_total是秘密信息的长度
% goalfile是提取出的秘密信息文件
% key是随机间隔函数的密钥
% result是提取的信息
function result=randlsbget(output,len_total,goalfile,key)
ste_cover=imread(output)
ste_cover=double(ste_cover)
% 判断嵌入信息量是否过大
[m,n]=size(ste_cover)
frr=fopen(goalfile, a )
% p作为信息嵌入位计数器将信息序列写回文本文件
p=1
% 调用随机间隔函数选取像素点
[row,col]=randinterval(ste_cover,len_toal,key)
for i=:len_toal
if bitand(ste_cover(row(i),col(i)),1)==1
fwrite(frr,1, bit1 )
result(p,1)
else
fwrite(frr,0, bit1 )
result(p,1)=0
end
if p==len_total
break
end
p=p+1
end
fclose(frr)
()
- 2007-06-28 16:08:04下载
- 积分:1
-
enbed
for embedding text in image
- 2010-07-16 23:06:49下载
- 积分:1
-
Image_Smoothing
所给程序中,先给出一副原始图像,在其中添加椒盐噪声,然后用几种方法进行平滑滤波,包括邻域均值法,邻域中值滤波和K邻域均值滤波,其中的K邻域均值滤波所选掩膜为3*3,K值取5,图片选用board.ti。(Given program, the first is given an original image, in which the added salt & pepper noise, and then use several methods of smoothing, including the neighborhood average method, o-field value filtering and K neighborhood mean filter, where K o domain mean filter mask for the selected 3* 3, K value of taking five, picture selection board.ti.)
- 2009-12-23 20:41:43下载
- 积分:1
-
Laser-theory-and-simulation
仿真激光的发光原理和速率方程以及调Q技术(Simulation of laser light-emitting principle and rate equations and Q-technology)
- 2016-11-21 16:52:35下载
- 积分:1
-
chenxu
树形曲线 迭代绘出类似树枝的曲线 第k次迭代产生节点数为nk,第k+1次迭代产生节点数为nk+1(shuxingquxian)
- 2009-09-25 22:21:59下载
- 积分:1
-
Matlab_Secret
很好的一本Matlab电子书——Matlab揭秘 (Matlab_Secret)
- 2010-12-18 10:14:21下载
- 积分:1
-
Synthetis_TM
This a matlab program for synthetics of slab waveguide for TM modes.
- 2012-03-26 00:06:27下载
- 积分:1
-
randControl
飞机飞行仿真中,对四个主要控制量,包括油门、升降舵、副翼及方向舵控制,分别提供持续2秒的随机大小的阶跃控制输入,四个控制量互相独立。可以用于飞行动力学系统辨识、参数识别等。(Flight simulation, the four main control volume, including throttle, elevator, aileron and rudder control, to provide for 2 seconds, respectively, a random step size control inputs, four control variables independent of each other. Can be used in flight dynamics system identification, parameter identification.)
- 2011-09-30 10:59:06下载
- 积分:1
-
QPSK
QPSK调制解调,包括波形,误码率,并加入时延,以前做的实验,可以作为参考。(QPSK modulation and demodulation, including waveforms, error rate, and add delay, before doing the experiment, can be used as reference.)
- 2009-04-23 17:06:44下载
- 积分:1
-
DWT
基于DWT的matlab源程序,并附上详细注解!!!(dwt transformation.)
- 2014-08-21 13:09:48下载
- 积分:1