Fraunhofer-Diffraction

应用matlab简单实现镜头畸变的校正，可用于cmos ccd(Application of a simple implementation of matlab lens distortion correction, can be used for cmos ccd)

Matlab频率域滤波，包括理想滤波器和高斯滤波器的实现代码及原始图片(freq filters)

k-d树的matlab程序，包含了KDTREE, KDTREEIDX and KDRANGEQUERY functions。提供了两个Demo scripts(kdtree_demo.m & kdrange_demo.m),很实用( This distribution contains the KDTREE, KDTREEIDX and KDRANGEQUERY functions. Included are the source code files in kdtree/src, as well as precompiled mex files for the following systems: - Mac OS X (Matlab 6.5) - Redhat Linux (Matlab 6.5) - Windows (Matlab 6.1) Two demo scripts are provided (kdtree_demo.m & kdrange_demo.m). The new features added June 2004: + You can now use N dimensional data points, where N>3. + Use KDTREEIND to return the index value to the closest point, instead of the closest point values. + KDRANGEQUERY can now return these index values as well. Written by/send comments or suggestions to : Guy Shechter guy at jhu dot edu June 2004 )

narrow-band interference suppression in order to avoid the narrow band communication systems has been caused by interference

In this directory, we can find the eleven files. The relationship between file name and the number of program written in the book is shown in as follows.

基于感兴趣区域图像压缩前的区域提取matlab代码matlab(Matlab matlab code to extract the region of interest based on the area of ​ ​ the image before compression)

This recreation makes the filters more stable. For high sampling rates the time records are downsampled. For the low sampling rates the time records are upsampled. Depending on the Filter types. Iterative resampling is used in the Nth octave band time filter to improve the attenuation of the resample program. Also the filters are settled by preappending time data, then deleting the preappended data after filtering.

说明：  马尔科夫状态转换的GARCH类模型用matlab程序代码做实证 ms-garch(The GARCH model of Markov state transition is empirically done with matlab code ms-garch)

对图像进行非下采样小波变换，得到一个低频子带和若干个高频子带。(Under the image of non-sampling wavelet transform, to get a low-frequency sub-band and a number of high-frequency sub-band.)

经过调试的平稳随机信号的AR模型，有助于新手理解(AR model of random signals, contribute to understanding of greenhand)