GF4_FFT

this is a code for pso optimization method

对脉搏信号进行滤波处理后，再进行时域分析和频域分析，提取出脉搏信号的周期、峰值、频率等特征。(After filtering the pulse signal, time domain analysis and frequency domain analysis are carried out to extract the characteristics of pulse signal such as period, peak value and frequency.)

Ever wanted to programmatically associate a file type on the system with your application, but didn t like the idea of digging through the registry yourself? If so, then this article and code are right for you.

说明：  比较详细介绍了matlab编程的语句，特别适合于初学者，是英文书籍，比较不错(matlab the language of technical computing)

A method for extracting information about facial expressions from images is presented. Facial expression images are coded using a multi-orientation, multi-resolution set of Gabor filters which are topographically ordered and aligned approximately with the face.

为图片进行添加高斯噪声均匀噪声以及椒盐噪声，并且采用a修正的均值滤波和自适应中值滤波进行除噪，并且进行除噪性能判断(Add a picture for uniform noise and Gaussian noise, salt and pepper noise, and the use of a modified mean filter and adaptive median filtering for noise removal, noise removal performance and to determine)

iOS中自定义pagecontrol的DEMO，很适用很好(DEMO iOS custom pagecontrol, it applies very well)

T. K. Datta, "Seismic Analysis of Structures" Wiley | 2010 | ISBN: 0470824611 | 464 pages | PDF

tabdlg.m this is a tabpage

说明：  数字下变频的matlab程序，在matlab中可运行(a progrme about ddc)