chap3

这是一本关于matlab的书籍，对初学者很有帮助(This is a book on matlab, helpful for beginners )

霍夫曼编码非常实用的小程序 ，实用matlab编写(Huffman coding is very useful for small programs, preparation of practical matlab)

how to plot using fuction "meshgrid", "mesh"

提取原始信号的功率谱就可以看出在哪个频带的能量比较高，噪声主要集中在哪里，这样就可以专门分析那个频带的噪声(The power extracted the spectrum of the original signal can be seen in which frequency band energy is high, the noise is mainly concentrated in where, so that it can be devoted to the analysis of the frequency band of noise)

刘金琨老师 《先进PID与Matlab仿真》（第二版） 数字PID仿真程序(Liu Jinkun ‘Advanced PID with the Matlab simulation[second edition]’ digital PID simulation program)

采用灰度图识别路径具有快速等优点，本程序是采用matlab的灰度AGV路径识别算法(Grayscale path used to identify the advantages of a rapid, this procedure is the use of matlab gray AGV path recognition algorithm)

有关 matlab 的行业的书籍 可以做下参考(Books about matlab industry can make a reference)

介绍了PWM整流器PI参数设计，并用matlab进行了仿真，很好很强大！(Describes the design of PWM rectifier PI parameters, and use matlab for simulation, the very very powerful!)

找三维激光扫描点云的k个紧邻点，用的是空间包围盒的方法(k jinlin)

利用Harris角点检测算法很好的程序，通过互相关算法检测角NCC配准(Good program using Harris corner detection algorithm, detect corner through cross-correlation method for NCC registration)