chapter04_ex

基于主成分分析(PCA)的人脸识别系统 利用2D PCA算法求对训练集向量进行降维的降维矩阵，最近邻法测试对测试集识别的精度(pca face recognition)

说明：  MATLAB动画制作代码，含多种动作，是演示的好实例(MATLAB animation code, containing a variety of actions, is to demonstrate a good example of)

增强lee滤波，可以直接用。用来观察lee滤波对图像的处理结果。是个函数，需要调用。(Enhance the lee filter, can be directly used. Lee filter used to observe the image processing results. Is a function, you need to call.)

在Matlab对FDTD进行仿真，并对一维，二维及三维电磁传播环境分别编写了程序(On the FDTD simulation in Matlab, and the one-dimensional, two-dimensional and three-dimensional electromagnetic propagation environment programs were prepared)

this is a matlab code of the method of visual cryptography based in the shadows method of Visual Cryptography, Moni Naor, Adi Shamir.

这是关于支持向量机SVM的例子,实用多多,大家可以看一下(on support vector machines SVM example, practical arrangement, we can look at the)

了解随机信号自身的特性，包括均值（数学期望）、方差、相关函数、频谱及功率谱密度等。(Understanding of random signal their characteristics, including mean (mathematical expectation), variance, correlation function, spectrum and power spectral density.)

对从金属棒材中提取的超声缺陷信号经过自适应滤波以后的极坐标显示图(polar graph of ultrasonic defect signal)

这是我收藏的可以使用的灰度共生矩阵特征提取的源码，希望对大家有用(here is the code which helps to calculate the features the different GLCMs.Hope it is useful to you )

deta sigma data converters book Chapter 3 Quantization Errors and Dithering in delta sigma Modulators