pianjipufenxi

说明：  实现数字水印的添加,使用matlab编码，希望对大家能有所帮助(add watermark on picture)

基于MATLAB的信号表示及运算，实现信号的反转、平移、展缩、相加和相乘。(MATLAB-based signal representation and computation, to achieve signal inversion, translation, exhibition shrinking, adding and multiplying.)

一种可以对数据的鲁棒性进行消除的工具箱 可以对数据进行加权(A way to the robustness of the data to eliminate the data can be weighted toolbox)

说明：  fdtd 1d

说明：  滤波器的使用，功能，详解，滤波器matla(filter filter )

象群游牧算法（EHO）原始代码（作者所写）。(Elephant herding optimization algorithm (EHO) original codes (the author wrote).)

Census Transform of an Image, Please read the comments for a better understanding of the code

通过matlab模拟仿真光反馈半导体激光器的非线性动态输出特性，主要包括单周期振荡，倍周期振荡，四倍周期振荡和混沌振荡等。(Research program by matlab optical feedback semiconductor laser output characteristics of nonlinear dynamics, there are single-cycle oscillation, the oscillation cycle times, four times the oscillation cycle oscillations and chaos.)

OFDM下行的仿真1、产生要传输随机数； 2、进行调制； 3、串并转换； 4、进行IFFT操作（代码中有用到共轭对称向量的IFFT为实数进行简化计算）； 5、增加循环前缀； 6、并串转换； 7、输出前滤波； 8、增加信道噪声（加性高斯白噪声）； 9、接收端串并转换； 10、去除循环前缀； 11、进行FFT变换； 12、信号解调； 13、误比特率计算； (OFDM downlink simulation 1, have to be transmitted random number 2, the modulation 3 series and transforms 4, the IFFT operation (code useful to conjugate symmetric vector of the IFFT of real numbers to simplify calculations) 5, the increase in circulating prefix 6, and string conversion 7, the output before the filter 8, increased channel noise (additive white Gaussian noise) 9, the receiver string and conversion 10, removal of cyclic prefix 11, the FFT transform 12 , the signal demodulation 13, bit error rate )

说明：  这是个关于图像区域增长分割算法的源程序，在matlab上实现(This is a region growing image segmentation algorithm on the source, to achieve in matlab)