saturation-matlab

this learn you about qpsk filter

九点差分格式，精度比五点差分要高，对于实现有限差分，是一个重要的程序(Nine-point difference scheme, the accuracy than the five-point difference is higher, for the realization of finite-difference, is an important procedure)

TABLA PARA HALLAR CENTROIDES DE MASA

好东西，虽然不是很难，但是这样可以节省不少时间，可以把精力投入到难度较大的改进以及应用上了，而不用在大家都会的基本程序上花挺多时间(Good things, though not difficult, but it saves a lot of time can focus into the more difficult to improve as well as the application, and not everyone will be in the basic procedures for the time spent挺多)

converting .wrl(3d image) t o.jpeg file

信号维数的估计，仿真效果非常好，小波包分析提取振动信号中的特征频率。( Signal dimension estimates, Simulation of the effect is very good, Wavelet packet analysis to extract vibration signal characteristic frequency.)

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)

很好很强大 (GOOD)

用于产生gamma分布的噪声序列，以及分析gaussian噪声的各参数。(Gamma distribution used to generate the noise sequence, as well as the analysis of Gaussian noise in each parameter.)

This is an updated new edition of the popular elementary introduction to probability theory and information theory, now containing additional material on Markov chains and their entropy. Suitable as a textbook for beginning students in mathematics, statistics, computer science or economics, the only prerequisite is some knowledge of basic calculus.