class

计算机控制系统之PID控制器P控制作用分析代码，基于MATLAB。(The computer control system of the PID controller P control function analysis code, based on MATLAB.)

基于DFT的正弦波的频率、初相以及幅度三项参数的高精度估计方法，含测试程序。(DFT-based sine wave frequency, initial phase and amplitude of three high-precision parameter estimation methods, including test procedures.)

通过simulink建模实现不同正弦信号的产生，此模型可作为正弦信号发生器。(Simulink modeling through the implementation of different sinusoidal signal generation, this model could serve as a sinusoidal signal generator.)

Stegnography based security technique

this file is sued to compute the fourier transform of a given optical signal

编写了龙格现象中举例的函数（1/（1+x^2））的三次样条插值图像和原图像的比较，此程序简单适用。(Prepared Runge phenomenon, for example a function of (1/(1+ X ^ 2)) of cubic spline interpolation image and the original image compared to a simple application of this procedure.)

说明：  这是一篇关于图象中眼睛和嘴巴的检测与定位的文章(This is an image in the eyes and mouth on the detection and location of the article)

Matlab中虽然有很多解方程的函数，但对于一般线性方程，有无穷个解时，却不能算出一个特解和基础解系，这几个函数可以实现这个功能。(Matlab Although there are many solutions to the equation function, but for the general linear equations, Infinite Solutions months, they can not penetrate a special solution and infrastructure solutions, which have several functions to achieve this function.)

用于脉冲噪声去除的保边缘算法，效果很好，大家可以学习 (Paul edge for impulse noise removal algorithm works well, we can learn)

image quality measurement