task1_main

Matlab的流程控制语句，掌握循环结构。 Matlab的脚本文件、函数文件编写。 Matlab脚本文件、函数文件的调试.用户数据的导入. 数值计算，能用编程方法实现。(Matlab flow control statements, control loop structure. Matlab script file, the function document preparation. Matlab script files, function files debugging. User data import. Numerical calculation, can Programming Method.)

基于MATLAB的QPSK源程序.实现了QPSK的仿真.源程序很长大家慢慢看.(QPSK based on MATLAB source. QPSK realized the simulation. We source a long slow slow to see.)

watershed transform coding

High Capacity Filter Based Steganography

：压缩感知是近年来应用数学界提出的一套关于稀疏信号采集和重构的新理论，它突破了传统奈奎斯特采样定理 的限制，以远少于传统奈奎斯特采样定理所需的测量数据就能够精确恢复原信号或估计信号的相关参数。将压缩感知理论应 用到DOA估计，可以解决传统DOA估计中高采样率、以及较多辐射源信号条件下难以定位的限制。研究了基于压缩感知理 论的DOA估计方法，并利用MATLAB进行仿真，通过与传统MUSIC算法比较可知，基于压缩感知的DOA估计方法具有显著 的优势(The theory of Compressive Sensing(CS)is the application of mathematics in the field of a sparse signal acquisition and reconstruction of the new theory. It breaks through the traditional limitation of Nyquist sampling theorem. It can recover certain signals or estimate their parameters far fewer samples or measurements than traditional methods. The application of compressed sensing theory to DOA estimation can solve the traditional DOA estimation in high sampling rate, as well as more of the radiation source signal conditions is difficult to position limits. This paper studies the theory of DOA estimation method based on compressed sensing theory, and simulation uses MATLAB, compared with the traditional MUSIC algorithms, DOA estimation based on compressed sensing theory method has the obvious advantage)

说明：  在无线传感器网络中，节点间的重复博弈，最后得到最优解，使系统性能最佳状态(In wireless sensor networks, repeated games between nodes, and finally get the optimal solution, so that system performance status)

This package contains a beta MATLAB version of the VSNR function from the paper "VSNR: A Wavelet-Based Visual Signal-to-Noise Ratio for Natural Images," D. M. Chandler and S. S. Hemami, published in the IEEE Transactions on Image Processing, September 2007.

powell法求极值，根据课程老师布置的作业，其中包括黄金分割法，一维进退法(powell method)

双线性插值法，用于图像的放大，将图像放大(Bilinear interpolation for image magnification, the image to enlarge)

定量分析模型，利用主成分分析建立定量分析模型，用于未知样品的预测(Quantitative analysis model, using principal component analysis to establish a quantitative analysis model for prediction of unknown samples)