PCA_Matlab

用周期图法求解功率谱曲线，并搜索信号频率值(Periodogram method for solving the power spectrum curve, and search for the signal frequency value)

此代码配套著名教材《通信原理》（樊昌信），有利于初学者更好理解通信原理(This code supporting well-known textbook "Communication Theory" (Fan Changxin), will help beginners to better understand communication theory)

一个选择器特效大全的例子：KNMultiItemSelector，IOS编程学习源码，很好的参考资料。(A selector effects Guinness examples: KNMultiItemSelector, learning IOS programming source code, a good reference.)

说明：  通过训练jaffe数据库，实现识别人脸高兴、惊讶、恐惧、生气等六种表情，并圈出。可调用电脑摄像头实时监测。内附有使用说明，可以使用。仅供学习参考。(Through training Jaffe database, six kinds of facial expressions, such as happiness, surprise, fear and anger, are recognized and circled. Real-time monitoring with a computer camera can be invoked. With instructions for use, it can be used. For learning reference only.)

这是matlab灰度差程序，其中包含阈值的获得和镜头突变的检测，适合初学者(This is a gray-scale difference matlab program, which includes access to the threshold of detection of mutations and lens, suitable for beginners)

using DWT and neural net

交互小波分析及其一致性分析，用于分析两个相关的时间序列之间存在的相互关系及一致性。(Cross-wavelet analysis and consistency analysis for the analysis of time series between the two related to the relationship between the existence and consistency.)

交换机解决共享上网交换机解决共享上网交换机解决共享上网交换机解决共享上网(Internet sharing solution to solve the switch switch switch solution to share Internet access sharing internet access sharing internet access switch solution)

PLSA，概率潜在语义算法,用于寻找变量之间的隐隐含变量，常用于图像标注、图像检索、计算机文本检索(PLSA, probabilistic latent semantic algorithm for finding faint containing variables between variables, commonly used in image annotation, image retri , computer text retri )

MATLAB源码，preprocessing.m: preprocess the picture including:Wiener filter; meddle value filter, change a gray picture to a binary one and then get the skeleton. centralizing.m: input the source picture output the core point of the fingerprint. samfun.m: generate the sample pattern automatically, which is used to sample the fingerprint. gabor2d_sub: get gabor filter. varpic.m: calculate variance picture(MATLAB source, preprocessing.m : preprocess the picture including : Wiener filter; meddle value filter, change a gray picture to a binary one and then get the skeleton. centralizing.m : input the source picture output the core point o f the fingerprint. samfun.m : generate the sample pattern automatically, which is used to sample the fingerprint. gabor2 d_sub : get gabor filter. varpic.m : calculate variance picture)