FDFD_polar

some functions for face recognition

最小二乘法，无论是在工程上还是在学术上都应用越来越广泛，文章给出了一个比较好用的最小二乘matlab 实现程序，很好用下载即可运行。(Least squares method, whether in engineering or applied more widely both the academic, the article gives a least squares matlab implementation relatively easy to use program, good to run with the download.)

Chapter 3 Matlab codes from AEMM book

丁丽娟 数值计算方法 课后实验matlab部分上机答案 仅供参考(Dingli Juan numerical methods matlab part of after-school experiment on board the answer is for reference only)

MATLAB的平台下mfcc的参数提取，可用于说话人识别,适用于声纹门禁系统(MATLAB platform MFCC parameter extraction for speaker recognition, suitable for voiceprint access control system)

这个是silabs的芯片si1010的发射单音信号的实例，因为涉及保密，所以修改了一部分，测试可用(This is an example of the tone signal transmitter chip si1010 silabs, and because it involves confidential, so modify the part of the test can be used)

应用自适应的干扰对消法去除高斯白噪声，程序中给出两种相关噪声产生的方法，第一种只有一个噪声是随机产生的，第二种两个噪声都是随机产生的。程序中给出了去噪后信噪比和均方差的增益。(Application of adaptive interference cancellation method to remove Gaussian white noise, the procedure given in the relevant noise generated by the two methods, first there is only one noise is randomly generated, the second two are randomly generated noise. Denoising process is given after the signal to noise ratio and mean square deviation of the gain.)

主成分分析 （ Principal Component Analysis ， PCA ）；特征脸；opencv(Principal component analysis (Principal Component Analysis, PCA) characteristic face opencv)

说明：  使用matlab制作SLM的会聚球面波相位全息图，欢迎大家借鉴(The use of MATLAB to produce SLM phase hologram of convergent spherical wave is welcomed for your reference.)

用自相关函数的方法获得语音信号的基频，来识别男女(Baseband, using the autocorrelation function method to obtain a voice signal to identify sexes)