chapter-2

The code implements the following paper: Guorong Xuan, Jiang Zhu, Jidong Chen, Shi Y.Q., Zhicheng Ni, Wei Su, "Distortionless data hiding based on integer wavelet transform" IET Electronics Letters, Volume: 38, Issue 25, page 1646- 1648, December 2002. (ISSN: 0013-5194) The watermark embedding and extraction modules have been implemented separately. The watermark embedding module embeds the watermark using bitplane compression in the integer wavelet transform domain. The watermark extraction module extracts the previously embedded watermark and restores the original image. A logo image is used as a watermark but can be replaced with any thing.

The files contain good ebooks for C++ programing and for Matlab

说明：  generation of AM signal,,simulink

源码-一个实例搞定MATLAB界面编程_简单易懂适合新手。(Source- an instance to get MATLAB programming interface _ easy to understand for novice.)

Fuzzy Logic Speed Control of a DC Motor : Control has proven for a long time to be good enough to handle control tasks on system control however, his implementation relies on an exact mathematical model of the plan to be controller and not simple mathematical operations. The fuzzy logic, unlike conventional logic system, is able to model inaccurate or imprecise models.The fuzzy logic approach offers a simpler, quicker and more reliable solution that is clear advantages over conventional techniques. Therefore take Matlab for develop of the control system that append with fuzzy logic is incoming for modem control and the advantages in fuzzy control are more robust control method than usual conventional control to variation of system parameter.

SIFT算法的改进加速版本SURF算法，matlab源代码，有测试图片(SIFT algorithm to improve the accelerated version of SURF algorithm, matlab source code, test picture)

Program for work with password. We can enter the password or edit password

利用wolfe-powell准则求解函数优化问题，使用不精确搜索法寻找最优步长，仿真正确。(Wolfe-powell guidelines for solving function optimization problems, the use of imprecise search method to find the optimal step length, the simulation is correct.)

skyline method to inverse K matrix in [K]{X}={F}

用Matlab编写的Bayes 分类器，用以进行两类模式识别(prepared using Matlab Bayesian classifier, used for two types of pattern recognition)