373901518KPCA

二维光子晶体禁带的MATLAB源码,光子晶体中因周期性结构而存在的频率禁带称为光子禁带，光子禁带的存在是光子晶体具有广泛应用前景的重要原因。 禁带越大，可控光的频带也越宽(Two-dimensional photonic crystal band gap of MATLAB source, photonic crystal structure exists because of the cyclical frequency band known as photonic band gap, photonic band gap is the existence of photonic crystal has a broad application prospects of the important reasons. The greater the band gap, controllable light the more wide-band)

说明：  国外的matlab教程，英文版，属于基础入门教材。(Matlab tutorial abroad)

本程序是一个数据分类的程序，首先使用KL变换对数据进行降维和去噪，然后用BP神经网络对预处理过后的数据进行分类，并且留有部分的测试集(This program is a data classification program, the first to use KL transform data dimensionality reduction and de-noising, then BP neural network to classify the data after preprocessing, and left part of the test set)

合成地震记录是用声波测井或垂直地震剖面资料经过人工合成转换成的地震记录（地震道） 合成记录的制作是一个简化的一维正演的过程，合成记录F(t)是地震子波S(t)与反射系数R(t)褶积的结果。(Synthetic seismogram is sonic or vertical seismic profile data after conversion into synthetic seismograms (seismic trace) the production of synthetic seismogram is a simplified one-dimensional forward modeling process, synthetic seismogram F (t) is the seismic wavelet S (t) and the reflection coefficient R (t) the convolution results.)

This histogram is a graph showing the number of pixels in an image at each different intensity value found in that image For an 8 bit grayscale image there are 256 different possible intensities , and so the histogram will graphically displays 256 numbers showing the distribution of pixels amongst these grayscale values

心电信号识别算法，采用阈值法检测心电QRs波群(ECG recognition algorithm, the detection threshold QRS ECG QRs)

matlab code for genetic

说明：  利用matlab编写的车牌提取程序~很好用，大家来下载(Prepared using matlab license plate extraction procedure ~)

说明：  判断同一平面内两线段是否相交，端点在线上，或者相离(The same plane to determine whether two line segments intersect, and the endpoint online or phase from the)

用于数据处理过程中，删除噪声和异常数据，提高数据均值特性(For data processing, remove the noise and abnormal data, improve data mean characteristics)