20121023

一个用PCA和LDA降维，并用knn分类的人脸识别例程(A dimension reduction using PCA and LDA, and face recognition with the knn classification routines)

说明：  基于bp神经网络的遥感图像的分类和识别的MATLAB实现(Bp neural network-based remote sensing image classification and recognition of the MATLAB implementation)

word文档内是热传导方程的MATLAB程序代码(word document is the thermal conductivity equation in MATLAB code)

matlab script for ofdm system

图像域上的DFS遍历，函数返回连通域数量，范围端点以及最大值(DFS traversal on the image domain, the function returns the number of connected domains, the scope of the endpoint as well as the maximum value)

说明：  MATLAB中画椭圆的自定义函数：ellipse，用后才会发现这个函数的强大功能！ 在ellipse之函数当中，其输入之变数分别如下： -ra 椭圆之长轴半径，可为列矩阵，若为列矩阵时，代表可同时绘制许多椭圆。 -rb 椭圆之矩轴半径，可为列矩阵，如ra。 -ang 水平轴之倾斜角，以弧度表示。可为列矩阵，但ra、rb、ang三者之矩阵数应相同。 -x0,y0 圆心之座标，可为矩阵，若为矩阵时，代表可同时绘制许多不同圆心位置之椭圆。 -C 椭圆线之颜色 -Nb 绘椭圆时所用之点数。(MATLAB in the oval painting custom function: ellipse, will be found after using the power of this function! Ellipse of the function in which its input variables are as follows:-ra ellipse of major axis radius for the column matrix, if for the column matrix, a representative may at the same time drawing many elliptical. oval-rb-axis radius of the moment for column matrices, such as ra.-ang horizontal axis of the tilt angle to radians. Matrix for the column, but ra, rb, ang among several of the matrix should be the same.-x0, y0 the coordinates of the center for the matrix, if for the matrix, a representative may at the same time drawing a number of different oval center location.-C elliptic line color-Nb painted oval of points used.)

说明：  后小波分析，contourlet变换，内有各种应用函数，及演示(After the wavelet analysis, contourlet transformation, there are a variety of applications functions, and presentation)

MAC层CSMACA算法。基于matlab平台，是学习MAC层接入过程的好材料。(MAC layer CSMACA of algorithms. Based on the Matlab platform, is a good material to learn the MAC layer access process.)

Ofdm transmetter/receiver

有关AM调制的实例，简洁实用，很有针对性，已经运行通过(Examples of the AM modulation, simple and practical, very targeted, has been running through the)