fengjiguangfujianmo

使用matlab解方程的程序，对于方程的求解附有ppt讲解(equation solution using Matlab procedures for the solution of bearing on ppt)

给定一组数据，利用特征值方法简单的计算其主成分，简单易懂，适合初学者学习(simple matlab code of PCA)

说明：  用精确线搜索的共轭梯度法，求问题的极小点(Using the conjugate gradient method of exact line search to find the minimum point of the problem)

实现在任意格式的图片中隐藏信息 联合开发网 - pudn.com

说明：  forward处理程序,使用于煤炭、油气工业(forward processing procedures used in coal, oil and gas industry)

16QAM实现程序，实现其星座图识别，调制和解调，并加载在高斯白噪声信道上(16QAM to achieve the program achieve its constellation identification, modulation and demodulation, and load in the white Gaussian noise channel)

Blowfish Algorithm is a Feistel Network, iterating a simple encryption function 16 times. The block size is 64 bits, and the key can be any length up to 448 bits. Although there is a complex initialization phase required before any encryption can take place, the actual encryption of data is very efficient on large microprocessors. Blowfish is a variable-length key block cipher. It is suitable for applications where the key does not change often, like a communications link or an automatic file encryptor. It is significantly faster than most encryption algorithms when implemented on 32-bit microprocessors with large data caches.

这是TVAL3算法，是基于增广拉格朗日法和交替方向法的全变分最小化算法。这个算法是有关压缩感知的重建算法的例子。TVAL3算法是在最小全变分法的基础上，结合了增强型拉格朗日函数和交替最小化方法。通过交替最小化方法寻找增强型拉格朗日模型的最小值，再由最速下降法进行迭代，更新拉格朗日乘子。 (TVAL3: TV minimization by Augmented Lagrangian and ALternating direction ALgorithms.This algorithm is an example of a reconstruction algorithm for compressed sensing. The TVAL3 algorithm is based on the minimum total variation method, which combines the enhanced Lagrange function and the alternating minimization method. The minimum value of the enhanced Lagrange model is sought by the alternate minimization method, and then the iterative method is updated by the steepest descent method.)

gcc and gnu compilers

一种适合入门者的EMD程序，能画出频谱图和IMF的时频图(an easy EMD program )