evluate-blur

用有限元方法计算光纤径向标量波动方程的解(Matlab code to compute radial component of scalar wave equation)

利用回溯法来求解凸函数的最优值。采用非精确线性搜索，利用最少的迭代次数找到最优值。(backtracking method，change the step size in searching procesure and finally find the optimizaiton points. )

an butterworth lowpass filter

利用LSB算法去实现了电子水印技术。代码完全实现了嵌入以及提取， 算法同时包含了4种攻击算法以及利用psnr测量提取的水印和攻击后提取的水印(This algorithm describes digital watermark technique by using LSB. This code implement embedding and extraction. At the meanwhile, this algorithm includes 4 different kinds of attacks and in the end, measure psnr between extracted watermark and attacked extracted watermark)

说明：  这是对于矩阵分解里面，最新出现的一种新的算法：非负矩阵分解的程序(This is the decomposition of the matrix inside, emerging a new algorithm: the procedure of non-negative matrix factorization)

that the matlab code and report about how LVDT thermocouple works

图像直方图的绘制，此程序提供两种方法，一是利用matlab自带得工具箱绘制，另一种是利用统计学的方法编程实现，最后对两种方法进行比较(Image histogram drawing, this program provides two methods, one using matlab toolbox comes too draw, another is the use of statistical methods to program implementation, and finally to compare the two methods)

浊音倒谱图的matlab实现，包括语音信号的分帧、加窗，取一帧进行分析。(Dullness inverted spectrum realize the matlab，ncluding sub-frame of the speech signal, windowing, take a frame for analysis)

局部离群点检测算法，matlab代码实现(local outlier detection)

短时傅里叶变换MATLAB代码，主要是用于非线性信号分析(Short-time Fourier transform MATLAB code, mainly for nonlinear signal analysis)