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说明：  这是关于DCT域的嵌入算法 用matlab实现的 它可以获得很高的不可感知性。(on DCT algorithm embedded with Matlab it can achieve the high Imperceptible sex.)

Tools to matlab optimization

包含了若干小波变换用于图像处理的MATLAB源码,很有用.(Contains a number of wavelet transform for image processing MATLAB source code, very useful.)

城市交通流的运行存在着高度的复杂性、时变性和随机性,实时准确的交通流预测是智能交通系统,特别是先进的交通管理系统与先进的出行者信息系统研究的关键. 基于交通流预测的特点,给出了基于遗传算法的小波神经 网络的交通预测模型GA-WNN ,用具有自然进化规律的遗传算法来对小波神经网络的连接权值和伸缩平移尺度进行前期优化训练,部分代替了小波框架神经网络中按单一梯度方向进行参数优化的梯度下降法,克服了单一梯度下降法易陷入局部极小和引起振荡效应等缺陷. 仿真实验验证了GA-WNN 预测模型对短时交通流的预测的有效性.(For the high complexity ,time-variation and probability of urban traffic flow , its real-time and exact prediction is critical to the research of intelligent traffic systems , especially for the advanced traffic manage-ment system and advanced traveler information system. Based on the character of the traffic flow prediction , a GA-WNN model is given based on the wavelet neural network with genetic algorithm. The genetic algorithm of natural evolving law for the gradient descendent algorithm in Wavelet Neural Network is partly substituted to pre-optimize the connection weight and the extension scale of the wavelet neural network and later optimize the parameters along a single gradient vector. This method overcomes some drawbacks when there exists a single gradient descendent algorithm , such as local minimum and oscillation. A short-time traffic flow prediction sim- ulation using the GA2WNN prediction model demonstrates the validity of the model .)

Pyramid.zip包含 1、pyramid.fig界面 2、高斯金字塔通过GPReduce.m函数实现 拉普拉斯金字塔由GPExpand.m函数实现 3、用imshow()显示拉普拉斯金字塔时，如果图像矩阵数据类型为double，会显示为彩色；而通过uint8()将类型强制转换为8位无符号整数，图像显示就为黑白了。 4、采用256*256的lena彩色图像(Pyramid.zip coantain 1、pyramid.fig interface 2、implemented by GPReduce.m and GPExpand.m 3、use 256*256 lena color picture)

运用分步傅里叶法求解NLS方程，最终输出时序图和频域图(Using split-step Fourier method for solving NLS equation, the final output timing diagrams and frequency domain)

MATLAB经典示例 以示参考 十分有用(MATLAB classic example to show reference useful)

提供一个matlab程序，功能是将被Delta-Sigma调制器调制过的信号解调出来。(Provide a matlab procedures, functions will be Delta-Sigma modulator modulated signal demodulated.)

计算矩阵特征值,特征向量，扎德算子，用于评系统的调用。(Calculating eigenvalues)

kmeans聚类算法，比较经典的算法，里面有讲解，容易理解(kmeans clustering algorithm to compare the classical algorithm, which has to explain, easy to understand)