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biometroics lecture notes

lowpass FIR filter 的MATLAB代码(MATLAB code of lowpass FIR filter )

提供求信息熵的代码，很好的东西，值得收藏。(The code for the information entropy, the good stuff, it is worth collecting. )

Linear prediction follows naturally from the general mathematics of linear systems. As the system output is defined as a linear combination of past samples, the system’s future output can be predicted if the scaling coefficients bj and ak are known.

说明：  基于matlab写的对人体的分割程序，这个是很有用的，尤其是对那些有一定matlab水平的人。(Based on matlab written procedure for the carving on the human body, this is useful, especially for those who have a certain level of people matlab.)

RGB转YIQ以便取明暗度部分，对单一图像进行人脸定位。 (RGB to YIQ brightness to take part, a single image for face positioning.)

采用ARX进行建模，迭代的方法进行油价预测，油价数据从国际网站上下载，预测效果较好(ARX modeling)

里面包含m序列，gold序列的生成函数，还有自己编写的自相关函数的M文件。(Which contains m-sequence, the gold generating function of the sequence, as well as I have written the autocorrelation function M-file.)

说明：  辨识信号的幅值、相位、频率；参数估计；低频振荡(Identification of the amplitude, phase, frequency of the signal; parameter estimation; low frequency oscillation)

基于小波-偏微分方程的图像降噪程序，Matlab7编程实现(based on wavelet- PDE image noise reduction procedures, Matlab7 Programming)