MODE-MIX-HHT

用双线性变换法设计IIR数字滤波器 （1）用双线性变换法设计一个巴特沃斯低通IIR 数字滤波器。设计指标参数为：在通 带内频率低于0.2π 时，最大衰减小于1dB；在阻带内[0.3π ,π ] 频率区间上，最小衰减大于15dB。 （2）以0.02π 为采样间隔，打印出数字滤波器在频率区间[0,π / 2] 上的幅频响应特性 曲线。 （3）用所设计的滤波器对实际心电图信号采样序列（在本实验后面给出）进行仿真滤 波处理，并分别打印出滤波前后的心电图信号波形图，观察总结滤波作用与效果。 (err)

这里具有一些MATLAB处理图象的源程序，希望对初学者有帮助(here with some MATLAB image of the source, and I hope to help beginners)

This Algorithm comutes demagnetizig tensor from Newell Paper[1] between two rectangular shape elements.Main function is and there is equivallent function written in c-language, you can use it to compile mex file.This script can be used in field of micromagnetics and finite difference magnetic simulation software. 1. A.J. Newell, W. Williams, D.J. Dunlop, J. Geophys. Res. 98, 9551 (1993).

在EFI架構下寫一隻PPI sample(PEIM to PEIM Interface),使兩隻PEIM可透過此PPI互相傳遞資料. Write a PPI sample to make two PEIMs able to communicate each other.(Write a PPI sample to make two PEIMs able to communicate each other.)

均值漂移算法的MATLAB代码，分割效果还是不错的。(Mean shift algorithm MATLAB code, segmentation effect is good.)

计算二维图形的分形维数，比较好用，计算方便(Calculate the fractal dimension of a two-dimensional figure)

matlab 扩展编程，何强何英主编，一本很好的matlab 学习教程！(matlab expand program， heqiang heying， matlab study tutorial！)

跳频扩频通信系统仿真 (Frequency Hopping Spread Spectrum Communication System Simulation)

可以实现模式识别领域的数据的分类及回归，PLS部分最小二乘工具箱,DC-DC部分采用定功率单环控制，GPS和INS组合导航程序，主要为数据分析和统计，在MATLAB中求图像纹理特征，快速扩展随机生成树算法。( You can achieve data classification and regression pattern recognition, PLS PLS toolbox, DC-DC power single-part set-loop control, GPS and INS navigation program, Mainly for data analysis and statistics, In the MATLAB image texture feature, Rapid expansion of random spanning tree algorithm.)

形态学中的腐蚀和膨胀运算。首先，对图像进行低通滤波，消除细小噪声的干扰。 在滤波时，没有采用传统的中值滤波器，而是采用顺序统计滤波器ordfilt2(Erosion and dilation operation in morphology. Firstly, the image is filtered by low pass filtering to eliminate the interference of small noise. In filtering, the traditional median filter is not used, but the order statistics filter ordfilt2)