First_Order

basic segmentation

用matlab编写的压缩解压缩程序，基于小波变换的是零树算法。(prepared using Matlab compression decompression procedures, based on wavelet transform is zero tree algorithm.)

基于DCT域的信息隐藏技术基于DCT域的信息隐藏技术(Information Hiding Based on DCT DomainInformation Hiding Based on DCT Domain)

有限差分TVD格式，最简单的，易于理解，适合初学者参照(Finite Difference TVD format, the most simple, easy to understand for beginners reference)

自己用MATLAB/Simulink搭的三相电压锁相环模块，输出幅值相位和频率(Use their own MATLAB/Simulink take the three-phase voltage phase-locked loop module, the output amplitude phase and frequency)

一个利用地震子波合成地震记录的MATLAB程序源代码，通过一个例子说明如何合成一个四层模型的地震记录。(Create 4 Layer synthetic seismogram model Call rickerw.m subroutine to generate ricker wavelet Use imagesc and plotseismic.m to plot the model)

本程序将一随机信号通过瑞利信道产生输出，并用Jakes方法产生单径的符合瑞利分布的复随机过程(This procedure will be a randomly generates an output signal through Rayleigh channel, and use Jakes method produces single-path Rayleigh distribution meet the complex stochastic process)

数据模型归一化，模态振动，数据分析，将振型与模态数据归一化，各种归一化方法(data normalize)

此代码用于完成MRI图像的压缩采样重建。它是论文"Sparse MRI: The Application of Compressed Sensing for Rapid MR Imaging", 2007中的源码(This is an implementation of Compressed Sensing reconstruction for MRI data. It implements the non-linear conjugate sub-gradient algorithm as described in the paper "Sparse MRI: The Application of Compressed Sensing for Rapid MR Imaging", 2007 Magn Res Med, In Press. )

说明：  离散信源无失真信源编码（实现huffman编码） 可用于教学(Discrete source lossless source coding (to achieve huffman coding) can be used for teaching)