eigenmode_calculation

Visual Cryptography is based on cryptography where n images are encoded in a way that only the human visual system can decrypt the hidden message without any cryptographic computations when all shares are stacked together. This paper presents an improved algorithm based on Chang’s and Yu visual cryptography scheme for hiding a colored image into multiple colored cover images. This scheme achieves lossless recovery and reduces the noise in the cover images without adding any computational complexity.

pcm编码,基础通信编程通信原理应用，基于通信原理的matlab pcm编码应用(PCM coding, basic communication programming communication theory applications, based on communication theory matlab pcm coding applications)

使用大量的有限元法求解偏微分方程，是国外的成品模型，是本科毕设的题目，能量熵的计算，GPS和INS组合导航程序，利用自然梯度算法。( Using a large number of finite element method to solve partial differential equations, Foreign model is finished, The title of the commercial is undergraduate course you Energy entropy calculation, GPS and INS navigation program, Use of natural gradient algorithm.)

偏微分方程的MATLAB解法,主要介绍非线性方程组求解方法,给出不同方法的数值解法。(MATLAB Solution of partial differential equations, describes the nonlinear equations solving methods, given the different methods of numerical solution solution.)

graph compares pd versus signal noise ratio

说明：  涡旋光束在光束的传播方向上有一个位相项e，而且它拥有一个光束轨道角动量，该matlab程序实现了从一个高斯基模变换到涡旋光束的基本功能。(The vortex beam has a phase term E in the direction of beam propagation, and it has a beam orbit angular momentum. The matlab program realizes the basic function of transforming from a Gaussian fundamental mode to a vortex beam.)

说明：  基于MATLAB的与wsn无线传感器网络有关的仿真程序，有几种路由协议，以及协议之间的比较，例如leach协议中的leach算法，deec协议(There are several routing protocols and the comparison between them, such as LEACH algorithm in LEACH protocol, DEEC protocol)

用3中误差扩散滤波器实现误差扩散，分别是floyd stein, sierra, Stenenson滤波器(Error diffusion filter with a 3 to achieve error diffusion, respectively, floyd stein, sierra, Stenenson filter)

this program is about jpeg demo

说明：  用于实现常规AM调制的MATLAB源程序。(Matlab demonstration script for AM modulation. The message signal is+1 for 0 < t < t0/3,-2 for t0/3 < t < 2t0/3 and zero otherwise.)