chap_8

。概括 了数字水印的研究现状和基本原理, 分析了基于小波变换的数字水印算法的优势, 阐述了小波 域水印嵌入与提取的过程, 最后由Matlab 仿真实现, 结果证明基于小波变换的数字水印具有较 强的掩蔽性和鲁棒性。(generalization The research status and the digital watermarking technology, analyzes the basic principle based on wavelet transform the advantage of digital watermarking algorithm, this paper expounds the wavelet Domain watermarking embedding and extracting process, finally by Matlab simulation results show the based on wavelet transform digital watermarking has more Strong masking and robustness. )

实数编码的小生境PSO算法优化多模态函数(Real-coded niche PSO algorithm for multimodal function optimization)

详细的介绍了matlab实用技术的方法和工作原理(Describes in detail the methods and practical techniques matlab works)

huffencode编码，哈罚担罚的萨法多发(huffencode encode)

cohere(x,y,M) computes the coherence function using successive DFTs of length with a Hanning window and 50 overlap. (The window and overlap can be controlled via additional optional arguments.) We see a coherence peak at frequency cycles/sample, as expected, but there are also two rather large coherence samples on either side of the main peak. These are expected as well, since the true cross-spectrum for this case is a critically sampled Hanning window transform. (A window transform is critically sampled whenever the window length equals the DFT length.)

matlab小程序，实现曲线的自动拟合，采用傅里叶拟合方程(matlab small program to achieve the automatic curve fitting, Fourier fitting equation)

this source code is very well

著名的匈牙利算法matlab代码，用于解决匹配问题(The famous Hungarian algorithm matlab code used to solve the matching problem)

使用GUI实现的串口编程例子，MATLAB调试环境下的多路串口数据实时绘图显示，具有良好的界面，使用了wsSgGt协议和 wsSgGt协议进行传输。 (GUI programming examples use the serial implementation, multi-channel serial data in real-time graphics display MATLAB debugging environment, has a good interface, use the wsSgGt and wsSgGt protocol for transmission protocol. )

用MUSIC算法和改进的协方差算法实现的功率谱估计(MUSIC algorithm and the modified covariance algorithm of power spectrum estimation)