CP0802

将水印嵌入并提取的matlab程序，并可进行演示(The watermark embedding and extraction matlab procedures, and demonstrated)

基于matlab的QPSK信号生成，已加噪。(QPSK signal generated)

本程序用于仿真LSCMA(最小二乘恒模)算法用于自适应波束形成时的波束方向图(This procedure for simulation LSCMA (least-squares constant modulus) algorithm for adaptive beamforming when the beam pattern)

说明：  这是我从网上摘抄下来的，关于matlab语法与常用函数要点，供大家一起学习。(This is the excerpt from the Internet down, on the matlab function of grammar and common elements for all to learn together.)

无需把图像转换成向量形式，而是将图像看成是矩阵形式，大大减少了计算量。(Without the need to convert images to vector form, but the image as a matrix form, greatly reducing the amount of calculation.)

优化神经网络预测，可以用于多种预测需求，需更改(Optimization of neural network prediction)

由于Matlab不同于其它编程语言,因此在使用数据库方面和其它语言有显著不同.主要介绍 Matlab中数据库的连接和使用。(Because Matlab is different from other programming languages, so in the use of databases and other languages are markedly different. Mainly Matlab database connection and use.)

In this demo, I use the EM algorithm with a Rauch-Tung-Striebel smoother and an M step, which I ve recently derived, to train a two-layer perceptron, so as to classify medical data (kindly provided by Steve Roberts and Will Penny from EE, Imperial College). The data and simulations are described in: Nando de Freitas, Mahesan Niranjan and Andrew Gee Nonlinear State Space Estimation with Neural Networks and the EM algorithm After downloading the file, type "tar -xf EMdemo.tar" to uncompress it. This creates the directory EMdemo containing the required m files. Go to this directory, load matlab5 and type "EMtremor". The figures will then show you the simulation results, including ROC curves, likelihood plots, decision boundaries with error bars, etc. WARNING: Do make sure that you monitor the log-likelihood and check that it is increasing. Due to numerical errors, it might show glitches for some data sets. (In this demo, I use the EM algorithm with a Rauch-Tung-Striebel smoother and an M step, which I ve recently derived, to train a two-layer perceptron, so as to classify medical data (kindly provided by Steve Roberts and Will Penny from EE, Imperial College). The data and simulations are described in: Nando de Freitas, Mahesan Niranjan and Andrew Gee Nonlinear State Space Estimation with Neural Networks and the EM algorithm After downloading the file, type "tar-xf EMdemo.tar" to uncompress it. This creates the directory EMdemo containing the required m files. Go to this directory, load matlab5 and type "EMtremor". The figures will then show you the simulation results, including ROC curves, likelihood plots, decision boundaries with error bars, etc. WARNING: Do make sure that you monitor the log-likelihood and check that it is increasing. Due to numerical errors, it might show glitches for some data sets. )

把matlab计算后的数据保存成obj格式的文件，能保存点和点点之间的连接关系，即obj格式的中的v和f(Obj format to save data into files that can save the points and little connection between the relationship that the v in obj format and f)

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