M文件3

This library contains helper functions to read image frames into matlab from Video file using DirectShow. This library has borrowed codes from Ashwin Thangali s "DirectShow (DirectX) based AVI file reader", and it can read multiple video formats besides avi. Features: a) can read frames from rmvb, avi, etc. b) handles most codecs installed on the system d) its implementation is only based on the IMediaDet interface -- Depending on your Matlab version, the .mexw32 files may need to be renamed as .dll -- The library usage is as follows, [avi_hdl, avi_inf] = dxVideoOpen(avi_filename) pixmap = dxVideoReadMex(avi_hdl, frame_num) img = reshape(pixmap,[avi_inf.Height,avi_inf.Width,3]) dxVideoCloseMex(avi_hdl) -- recompile the library I have compiled the code with the DirectShow lib in Microsoft DirectX 9.0 SDK Update (December 2004) -- known limitation a)only works for windows :( b)may be slow for big image frames and some codecs.

对声音信号进行处理的matlab仿真，可以用于水声信号(Right audio signal processing matlab simulation can be used for underwater acoustic signal)

数字信号的基带传输 PAM的功率谱密度 数字基带的接收 匹配滤波器 升余弦滚降系统 基带信号眼图(Digital baseband digital signal baseband transmission power spectral density of the PAM receiver matched filter raised cosine the system baseband signal eye diagram)

遗传算法 求下列函数的最大值 obj(x)=x.*(10-x).*sin(2*pi*x), xin[0,10].(Optimization problem by genetic algorithm of a function obj(x)=x.*(10-x).*sin(2*pi*x), xin[0,10].)

数字图像在产生过程中经常会受到噪音污染。因此，对于数字图像应该对其进行去噪音处理。在传统的基于傅里叶变换的信号去噪音方法中，可以使得信号和噪音的频带重叠部分尽可能的小，这样就可以在频域通过时，不需改变滤波方法而将信号和噪音分隔开来。但是，如果信号和噪音的频域重合时，用该方法进行噪音处理的效果就比较差。(digital image in the selection process will be subject to regular noise pollution. Therefore, the digital image should be carried out to deal with the noise. Based on the traditional Fourier Transform method of signal to noise, can result in a signal and noise bands overlap small as possible, so it can be adopted in the frequency domain, the need to change methods of filtering the signal and noise to separate. However, if the signal and noise in the frequency domain coincidence, the method for dealing with the effects of noise on the relatively poor.)

nat blaster,测试nat的连通性能.(nat blaster, tests nat to connect the performance )

图像灰度变换的基本运算函数，对于其了解有很重要作用，这是老师代码(Image gray-scale transformation of the basic arithmetic function, for a very important role in their understanding, it is the teacher code)

PAM OOK FSK modulations

信噪比，相对强度噪声对PAM4调制误码率的影响(Influence of signal to noise ratio on BER of PAM4 modulation)

几种粒子群算法求解VRP问题，与GA对比(Several particle swarm algorithm VRP problems, compared with GA)