obscurance

Matlab sumilink model contains summ and gain.

这是一本书的一个章节的源代码关于图像优化的我觉得真的挺好的(This is a chapter of a book about image optimization of the source code, I think it is quite good)

介绍局部均值分解（一种非平稳信号处理方法）的文献。原理算法、故障分析等。(Literature describes the local mean decomposition (a non-stationary signal processing methods). Principle algorithms, fault analysis, and so on.)

说明：  利用matlab软件和时域有限差分方法来算三维结构的程序，采用了周期边界条件(Using matlab software and finite difference time domain method to count three-dimensional structure of the program, using the periodic boundary condition)

说明：  含有积分算法 依据光场分布的积分算法，使用积分算法计算探测面某点的光强 利用高斯光场的分布，计算不同探测角度的光强分布(Integral algorithm. The integral algorithm is used to calculate the light intensity of a point on the detection surface by integral algorithm.. The distribution of Gauss light field is used to calculate the intensity distribution of different detection angles.)

Cheby 四种基本滤波器(Cheby four basic filter)

高光谱图像处理和分析，该程序包括高光谱图像中最常用的空间/光谱维去相关法SSDC、ROC曲线分析和CEM目标探测算法(Hyperspectral image processing and analysis, the program includes the most commonly used hyperspectral image spatial/spectral dimension to the relevant laws and SSDC, ROC curve analysis and CEM target detection algorithm)

说明：  本文提出了一种基于混沌加密的DCT域二值图像数字水印算法.该算法首先利用混沌序列将含有版权信息的有意义二值图像水印进行加密,然后利用人眼视觉系统(HVS)的特性将原始载体图像进行块分类,最后将不同强度的水印分量嵌入到不同类的图像块DCT中频系数中去.利用混沌序列对水印进行加密,使水印本身具有安全性,对数字作品进行双重保障.通过高斯噪声,椒盐噪声以及JPEG压缩和剪切等攻击试验,表明了该算法具有较好的鲁棒性.(Encryption in DCT domain is proposed. Firstly, the meaningful binary image watermark containing copyright information is encrypted by using chaotic sequence, and then the original image is classified by using the characteristics of human visual system (HVS), Finally, the watermark components with different intensities are embedded into the DCT intermediate frequency coefficients of different types of image blocks. Chaotic sequences are used to encrypt the watermark, so that the watermark itself has security and double protection for digital works. Experiments on Gaussian noise, salt and pepper noise, JPEG compression and clipping show that the algorithm has good robustness)

eng_mat.rar是matlab实例,有的matlab安装时不带，可以下载拷到matlab的example文件夹里(eng_mat.rar is the matlab example, matlab installed some without, you can download the example Kaodao matlab folder)

说明：  拉伸具有调节的功能 大家试试看，我自己在书上总结的( The stretch has adjustment function everybody to try to look that I summarize in the book )