20067511485943385

matlabcontourlet变换结合了不可分离的方向滤波组,具备小波所不能表达的多方向特性,能有效捕获自然图像的边缘轮廓信息。本文分析了图像ontourlet系数的统计特征,并利用广义高斯函数对各子带系数层进行建模。将此模型应用于基于VisTex的自建纹理图像库,采用矩匹配估计法,提取模型参数集,运用K2L (matlab)

例程：通信系统与 MATLAB (Proakis)，很有益处，不妨(routines : communication system with MATLAB (Proakis), useful, to take a look)

Distibution models sine

设计低通数字滤波器，要求在通带内频带低于 时，允许幅度误差在1dB以内(Design of digital low pass filter, requirements in the passband frequencies below, allow a margin of error of less than 1dB,)

光参量放大中信号波长对转换效率的影响matlab仿真代码(Optical parametric amplification of the signal wavelength conversion efficiency of matlab simulation code)

说明：  遗传算法（Genetic Algorithm，GA）最早是由美国的 John holland于20世纪70年代提出,该算法是根据大自然中生物体进化规律而设计提出的。是模拟达尔文生物进化论的自然选择和遗传学机理的生物进化过程的计算模型，是一种通过模拟自然进化过程搜索最优解的方法。该算法通过数学的方式,利用计算机仿真运算,将问题的求解过程转换成类似生物进化中的染色体基因的交叉、变异等过程。在求解较为复杂的组合优化问题时,相对一些常规的优化算法,通常能够较快地获得较好的优化结果。遗传算法已被人们广泛地应用于组合优化、机器学习、信号处理、自适应控制和人工生命等领域。(Genetic algorithm (GA) was first proposed by John Holland of the United States in the 1970s. It is designed and proposed according to the evolution law of organisms in nature. It is a computational model of biological evolution process simulating natural selection and genetic mechanism of Darwin's biological evolution theory. It is a method to search the optimal solution by simulating natural evolution process. The algorithm transforms the solving process of the problem into a process similar to the crossover and mutation of chromosome genes in biological evolution by means of mathematical method and computer simulation. When solving complex combinatorial optimization problems, compared with some conventional optimization algorithms, it usually can get better optimization results quickly. Genetic algorithm has been widely used in combinatorial optimization, machine learning, signal processing, adaptive control and artificial life.)

该程序可以用来进行波谱分析，非常直观地图示频谱信息。(The program can be used for spectral analysis, spectral information very intuitive icon.)

是计算电力系统潮流计算的很好的而功能软件(Calculation of Power Flow Calculation is very good and functional software)

基于电力系统中的潮流编写的电力系统回路阻抗法 以更好的解决电力系统中的潮流问题(Based on the trend of power system loop impedance power system written law in order to better solve the power system of the power flow problem )

this source code is chp6ex14 matlab