KmeansClus

this program to help you to Find the local threshold of an image

this file is a matlab program. File name is 2D fast fourier transform.

说明：  摄像机标定经典标定法—— 张正友平面标定法(Zhang camera calibration plane calibration)

解决中文问题的一些技巧， 非常经典 谢谢支持 希望对您有所帮助(Chinese language skills to solve the problem of some very classic thank you want to help you support)

说明：  电力系统无功优化相关，基于粒子群优化算法的电力系统无功优化设计(Power system reactive power optimization)

详细讲解MATLAB7_0的新功能和特点，PDF文档(MATLAB7_0 elaborate on the new functions and features, PDF documents)

this file contains all of Model predictive control programs in Matlab

应用MATLAB编写的三维时域有限差分程序。是初学FDTD的好帮手。建议初学者参考。(Application of MATLAB to prepare three-dimensional finite difference time domain procedure. FDTD are learning a good helper. Recommended reference for beginners.)

这是一个关于二维的FDTD的源代码，主要模仿电磁波传播的传播，对于做天线，雷达的朋友有帮助(This is one of the two dimensional FDTD source code, mainly to imitate the propagation of electromagnetic wave propagation, for antenna, radar has to help a friend)

优秀论文及配套源码。Hilbert-Huang变换(HHT)是一种新的非平稳信号处理技术，该方法由经验模态 分解(EMD)与Hilbert谱分析两部分组成。任意的非平稳信号首先经过EMD方法处理后被分解为一系列具有不同特征尺度的数据序列，每一个序列称为一个固有模态函数(IMF)，然后对每个IMF分量进行Hilbert谱分析得到相应分量的Hilbert谱，汇总所有Hilbert谱就得到了原信号的谱图。该方法从本质上讲是对非平稳信号进行平稳化处理，将信号中真实存在的不同尺度波动或趋势逐级分解出来，最终用瞬时频率和能量来表征原信号的频率含量。 本文研究了基于HHT的暂态电能质量扰动检测方法，介绍了HHT的基本原理和利用HHT检测电能质量多扰动信号的实现方法。仿真试验表明该方法可以实时检测扰动的起止时刻，持续时间和扰动幅度，适用于电能质量多扰动的监测和辨识系统。 (Hilbert-Huang Transform(HHT) is a new non-stationary signal processing technology，including the Empirical Mode Decomposition(EMD) and Hilbert spectral analysis．In this method，arbitrary non-stationary signals was divided into a series data sequence with different characteristic scales after the first EMD treatment，each sequence is called an intrinsic mode function(IMF)，and then each IMF component gained corresponding the Hilbert spectrum though Hilbert spectrum analysis，a summary of all Hilbert spectrum assembled to the spectra of the original signal．In essence，this method is a stable processing for non-stationary signal，which decomposed the different fluctuations or trends in the signal in rum，and represented the frequency content of the original signal using the final instantaneous frequency and energy． This paper study a method to detect power quality disturbances based on the HHT，in which the principle and the realization of the HHT and the realization of power quality disturbance)