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digital signal processing

利用Crank-Nicolson隐式差分格式求解抛物型偏微分方程，matlab程序代码(Crank-Nicolson implicit difference scheme)

说明：  用于matlab模拟透镜的光线追迹，可以更改程序中的相关参数模拟任意面型的透镜对光线的聚焦或发散效果。(Ray tracing for matlab analog lens.)

matlab 函数大全，编写matlab程序时供参考(matlab functions, for reference when writing matlab program)

Matlab program for optimal dispatch of power

ixneighbors returns the indices of neighbor cells in a n*m matrix A. ic and icd are column vectors of same length where ic are the indices of cells in A and icd are the indices of the neighbor cells.

名为k-means的MATLAB函数，实现k均值算法。输入矩阵X,w，输出最终估计值和聚类的标识数字。(Called the k-means of the MATLAB function, to achieve k means algorithm. Input matrix X, w, the output value of the final estimates and cluster identification number.)

本程序完成cic滤波器的设计，并且含有滤波实例，同时设计了三种cic滤波器进行比较(this programm propose the design of cic filter. it contain an example of how this filter works. meanwhile it compares three different cic filter)

the Gibbs phenomenon graphic in matlab , you can change the number of armonics by changing the N value

无参考的图像质量评价算法，基于图像的空域与频域的信息熵，超过现存的所有质量评价算法。(No reference image quality uation algorithm, and information based on spatial frequency domain of the image entropy over all existing quality uation algorithm.)