tongtaifilter

Matlab for FEC coding & decoding

Markov Chain Monte Carlo

说明：  一个简单的matab的小波去噪程序，算法采用WT的方法，实现了较好的信号去噪效果(A simple matab wavelet denoising procedure, the algorithm using WT method to achieve a good signal de-noising effect)

用于检测面积的 用于检测面积的 能用的程序(Procedures for the detection area can be used for detecting the size)

可以读取yuv文件，输入文件夹名字、图像尺寸、帧数等，为处理yuv文件的前提(Input: filename- YUV sequence file dims- dimensions of the frame [width height] numfrm- number of frames to read startfrm- [optional, default = 0] specifies from which frame to start reading with the convention that the first frame of the sequence is 0- numbered)

由海洋模式数据和卫星高度计诊断的海表面高度诊断海洋中尺度涡旋的matlab程序(Detect the geostrophic eddies altimetry and ocean models sea surface height (SSH). Detection method : a combination of detecting the largest closed contours in SSH and the positive values of an Okubo-Weiss parameter. This require less tunable parameters in comparison to previous methods. This is usefull for the comparisons between different products, such as models and altimetry.)

PWM层叠载波信号，适用于基于IGBT的5电平模块化多电平换能器(PWM stacked carrier signal, suitable for IGBT based 5 level modular multilevel transducer)

BP神经网络容易陷于局部极小值，PSO算法在无约束非线性函数优化方面性能优越，通常可以直接找寻到全局最优解，即使不能搜多到全局最优解，也距离全局最优点不远。当然，基本PSO算法陷入局部极值也是有的。对于这个缺点目前还没有找到比较有效、省市的解决方案。本案例实现利用PSO算法和BP算法共同训练神经网络，先将网络进行PSO算法训练，然后BP算法接着进行小范围精细搜索，PSO算法训练神经网络的本质就是将输出误差函数（即能量函数）看成目标函数，PSO对能量函数进行全局寻找最小值。(BP neural networks are prone to local minimum values. The PS algorithm has superior performance in the optimization of unconstrained nonlinear functions. It can usually find the global optimal solution directly. Even if it can not find more global optimal solutions, it is not far from the global best. Of course, there is also a local extreme of the basic PO algorithm. For this shortcoming, there is no more effective, provincial and municipal solution. This case realizes the use of the SO algorithm and the BP algorithm to train the neural network. First, the network is trained in the SO algorithm, and then the BP algorithm is followed by a small range of fine searches. The essence of the PO algorithm training neural network is to regard the output error function(ie, the energy function) as the objective function, and the PO seeks a global minimum value for the energy function.)

基于SVM的人脸识别系统，matlab实现，google code 最新代码。(face recgonition based on SVM,impleted on Matlab .The code is downloaded from google this days.)

用于数字通信中的几种编码仿真。(msk,mpsk,bpsk,epsk,ookd,qpsk...)(digital modulation including msk,mpsk, bpsk, epsk, ookd, qpsk...)