PSNR_Stegnography

FDTD simulations of wave propagation in 1D and 2D systems

用于椒盐脉冲噪声去除的基于方向权重的去除方法，效果很好(For the salt and pepper impulsive noise removal based on the direction weighting method of removing, a good effect)

LMS predictive 1d matlab code

说明：  利用NSGAII算法进行对复杂网络的社区检测(community detection in complex network)

介绍matlab7中各种实例的电子图书，比较不错，对初学者有较大帮助。(Description matlab7 various examples of e-books, relatively good, greater help for beginners.)

说明：  边缘检测，sobel，canny，Roberts，等算子边缘检测matlab代码(Edge detection, sobel, canny, Roberts, and other operator edge detection matlab code)

说明：  传感器阵列波束优化设计与应用书籍的第三章matlab程序(Chapter III matlab program of book Sensor array beam optimization design and application)

Numerical program on Newton’s forward difference formulae, the use of Sterling formulae & the use of Newton’s backward difference formulae combindly, Trapezoidal rule, Gauss-Seidal method, Jacobi method.

使用LSB方法在图像中嵌入一段文本，可能对大家有用！(use LSB methods embedded in the image section of the text, may be useful for all!)

用 LDPC 解码法，对原始信号通道的噪声进行评估，消去。具体原理可参照IEEE TCOM的论文。(Channel Noise Estimation or correlation estimation for distributed source coding Using Particle based Belief Propagation for LDPC decoding in AWGN and BSC models. This code is partially based on our published journal papers with some additional improvements. In this code, we removed the parameter lambda to reduce the number of free parameters. PBP estimator is distributed in the hope that is will be useful, but without any warranty. The codes have not been optimized, so the estimation speed may be slow. To use PBP estimator source code in your research, please cite our journal papers published in IEEE TCOM. )