MATLAB codes used in Mathematical Methods for Diff

说明：  eemd算法原程序及举例，用于信号分解，在emd基础上优化程序(EEMD algorithm original program and examples for signal decomposition, optimization program based on EMD)

一个用matlab编写的天线问题，用于计算单导体传输线(Using matlab to prepare an antenna problem, used to calculate the single-conductor transmission line)

QR码作为一种可高速、全方位识别的二维条码,已经在各行各业中得到了应用,并具有很大发展潜力.本文针对QR码图像的识别过程中可能遇到的图像噪声干扰、QR码占实际拍摄图像的一部分、倾斜、几何失真等问题进行了研究,提出了通过改进型中值滤波去除噪声,使用QR码符号特性定位并对倾斜图像进行旋转,对失真不严重的图像采用控制点变换和双线性插值方法进行几何校正.实验证明, 本文的方法简单有效, 可以用于提高条码的正确识别率.(As a high-speed, full identification of the two-dimensional bar code, QR code has been applied in all walks of life, and also has great potential for development. In this paper, aiming at QR code image recognition process may be encountered in noise interference, QR code accounting for the actual captured image just a part, slant, geometric distortion, and other issues have been studied, put forward through improved median filter to remove noise, use QR code symbol characteristics to locate and rotate the tilted image, distortion which is not serious use control-point transform and spatial bilinear interpolation method for geometric correction. The results show that this method is simple and effective, can be used to improve the QR code correct recognition rate.)

生成导频信号，并利用导频进行信道估计，利用两种方法分别进行信道估计，两种方法并进行了比较。(Generating a pilot signal, and using pilot channel estimation)

汽车车牌识别matlab程序代码，能够对汽车车牌图片进行识别(car license identification)

它是关于矢量量化的语音识别，让看到他学者受益匪浅，日后定能拓展视野！(lovely and satisfactory)

本例用五点差分法求解一个二阶偏微分方程，其间用SOR迭代求解(This example uses a five-point difference method for solving second order partial differential equations, with the SOR iterative solution during)

是关于使用内点法来研究的最优潮流计算。对于研究opf的具有一定帮助(Interior point method to study the optimal power flow calculation. Have some help for research opf)

独立成分分析（ICA）源代码大全，为初学者提供大量的算法实现代码，方便研究(Independent component analysis (ICA) source code complete for beginners provide a lot of algorithm code to facilitate the study)

光子晶体的能带图计算，其实质就是电磁本征值（复矢量场）的问题。利用平面波展开磁场，引入f(r)=1/eps(r)，再利用倒格矢G将f(r)展开，将两者代入光子晶体的支配方程，最后得到一个平面波展开的方法的线性方程组，最终转化为求解其特征值向量的问题。(Energy band diagram of the photonic crystal, its essence is the electromagnetic eigenvalues ​ ​ (complex vector field).The linear plane wave expansion magnetic field, the introduction of f (r) = 1/eps (r), re-use reciprocal lattice vector G will expand f (r), the two substituted into the governing equations of the photonic crystal, and finally get a plane wave expansionequations, and ultimately into solving the problem of its eigenvalues​ ​ .)