113172246zhiwentuxiangyuchuli

说明：  粒子滤波的5个示例程序，对初学者非常有用(5examples for particle filter ,useful for new users)

this is code for "embeded extended visual cryptography ". I had done programming in MATLAB. >>steps to run the program: Type add only in command window. I had run this code on Matlab 7.1

该文件中包含信息熵和图像熵的计算 源程序，均为m文件形式 (The calculation of the image information entropy)

this is matlab source

Otsu-最大类间方差Matlab代码 最大类间方差法原理：最大类间方差法是由日本学者大津于1979年提出的,是一种自适应的阈值确定的方法,又叫大津法,简称OTSU。它是按图像的灰度特性,将图像分成背景和目标2 部分。背景和目标之间的类间方差 ％ 大,说明构成图像的2 部分的差别越大,当部分目标错分为背景或部分背景错分为目标都会导致2 部 ％ 分差别变小。(Otsu- Otsu Matlab code Otsu Principle : Otsu law by Japanese scholars in the large-1979's, is an adaptive threshold established methodology, also known as big-law, referred to Otsu. It is based on image characteristics of the gray image can be divided into the background and objectives of Part 2. Background and objectives between the between-class variance%, which meant that the two images form part of the greater difference, When some background into the wrong target or part of the background into the wrong target will lead to sub-2% difference becomes smaller.)

很好的MATLAB联系实例。MATLAB（矩阵实验室）是MATrix LABoratory的缩写，是一款由美国The MathWorks公司出品的商业数学软件。MATLAB是一种用于算法开发、数据可视化、数据分析以及数值计算的高级技术计算语言和交互式环境。除了矩阵运算、绘制函数/数据图像等常用功能外，MATLAB还可以用来创建用户界面及与调用其它语言（包括C，C++和FORTRAN）编写的程序。 (Good matlab programming training materials)

说明：  卡尔曼滤波和自适应滤波 y(Kalman filtering and adaptive filtering y)

计算了半无限大压电铌酸锂半空间中Rayleigh波的传播速度(Calculate the semi-infinite half space piezoelectric lithium niobate Rayleigh wave propagation velocity)

time difference of arrival application for wireless sensor networks

The statements below guide us to write the code for the transmission of sensed data to a sink node using cognitive radios in multiple spectrum bands. In doing this we are trying to find the most appropriate modulation scheme using MATLAB simulation.