EXTPRINCIPLE

主要是关于关于图像处理方面的matlab程序代码，有指纹方面的，图像增强方面的。(Is mainly about about matlab image processing code, there is the fingerprint area, aspects of image enhancement.)

matlab方程求根程序，里面包括了常用的matlab方程求根的程序，包括手写的和matlab自还的函数。(matlab equation Roots program, which includes the commonly used procedure for finding roots of equations matlab, including handwritten and self is also a function of matlab.)

this codw is a simulation of photonic crystal 1 dimentional array dispersion

MATLAB 下的LDPC编码解码，自己编写，在7/0下通过验证(Decoding LDPC codes under MATLAB, I have written, in 7/0, validated)

MATLAB编写的基于决策树的ID3算法实现，模式识别，人脸识别。压缩包中包含两个源文件和测试图片，ID3源文件为主代码，fi为求熵函数。(MATLAB prepared based on the ID3 decision tree algorithm, pattern recognition, face recognition. Compressed package contains two source files and test images, ID3-based source code files, fi for the sake of entropy.)

基于matlab GUI界面设计,关于超声波倒车雷达测距的，部分实现了追踪测速迭代松弛算法。( Based on matlab GUI interface design, About ultrasonic parking radar ranging, Partially achieved tracking speed iterative relaxation algorithm.)

How C# calls Matlab? This is the solution

FDTD Finite-Difference Time-domain in free space no ABC FDTD(t) runs FDTD for time t. FDTD implements the FDTD/staggered leapfrog scheme over time 0-max_time and space 0-max_space. This program simulates a gaussian pulse in the grid specified with max_time and max_space. The pulse is sent from the center of the problem space and disperses in both directions -Kira Heater

The altgoritm performs a reed solomon (7,3) encoding over a .txt file simulating the errors from the transmission path. The decoding procedure is also available and can aplied on the coded file in order to optain an aprroximation of the initial text.

定义法计算计算Lorenz系统lyapunov指数，结果比较精确！ 可以改为任意3维动力系统的lyapunov指数的计算程序！(Define of the method to calculate the Lorenz system lyapunov index, accurate results! Can be changed to any 3-dimensional dynamical systems lyapunov index calculation program!)