yuanma

this is about pattern recognition.

使用改进后的全变分算法对地震振幅切片进行处理，可以提高地震剖面的分辨率，增加信噪比。(Using the improved algorithm, total variation for processing seismic amplitude slices, can improve the resolution of seismic profiles, increased signal to noise ratio.)

如何计算矩阵数据的协方差矩阵。还有在什么情况下只能计算均值、方差，而不能计算协方差，什么情下，只能计算协方差，但不能计算协方差矩阵。(How to calculate the matrix data covariance matrix. And under what circumstances can only calculation mean, variance, and not calculation covariance, what feeling, can only calculation covariance, but not calculation covariance matrix.)

说明：  pq法的谐波检测，谐波源是三相全桥整流电路(Pq method of harmonic detection, harmonic source is a three-phase full-bridge rectifier circuit)

二维Gabor变化，MATLAB实现，包括实部和虚部(2D_Gabor)

经典leach算法,是学习leach最好的算法，有详尽的代码注释。(classical algorithm of leach)

通过分析组织图、穿综图和纹板图三者的关系,在对织物上机图进行矩阵建模的基础上,提出了一种基于Matlab程序设计自动产生并绘制上机图的新方法.(By analyzing the organization chart, diagram and pattern heald board map of the three, on the basis of the fabric machine diagram matrix modeling, is proposed based on Matlab programming automatically generated and new ways to draw on the local map.)

donwload from Matlab source code

说明：  该代码经本人亲自测试，完全通过运行，提取的特征点数量较多(I personally tested by the code, completely by running a larger number of feature points extracted)

用matlab编写的波包变换的程序，用于读取波群及小波包的数据(Wave packet transform programs written with matlab, wave group and wavelet packet is used to read data)