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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.

改进的粒子群算法--自适应粒子群算法，在普通的粒子群算法里面加入了熵和平均粒距的概念，收敛速度大大提高，而且不容易陷入局部最优，能更有效的解决复杂问题。(improved PSO-- Adaptive PSO. In a normal PSO which joined the entropy and the average particle from the concept of convergence speed, it is not easy to find the global optimum, the more effective solutions to complex problems.)

利用边缘检测进行图像分割,有图有真相，效果还行(Edge detection, image segmentation)

一个SM和STBC的代码，matlab编写，可是实现任意qam调制，可以计算误码率(A SM and STBC code, matlab prepared, but the realization of arbitrary QAM modulation, bit error rate can be calculated)

CDMA的MATLAB仿真，可以进行不同信噪比下的误码率分析。(MATLAB simulation of CDMA can be carried out under different signal to noise ratio of the bit error rate analysis.)

chu序列的同步应用，用于帧同步，提取数据起点(Application of Chu sequence for synchronization, frame synchronization, data extraction point)

数值分析的部分matlab代码分享，如有错误还请见谅！(Part matlab code analysis of numerical analysis, please forgive me if there is any mistake.)

Interpolation-spline/polynomial interpolation example. Integration-integration using trapezoidal rule (equally spaced data)

三相桥双极性PWM控制Simulink仿真，另加一滤波器观看PWM经过低通滤波后的波形，适合电力电子初学者(Three-phase bridge bipolar PWM control Simulink simulation, plus a watch PWM filter through after the low-pass wave filter for power electronics for beginners)

利用Matlab语言编写的读取segy数据的小程序(Using Matlab language segy data read applet)