2X2

This is very good meaning for understanding steepest descent

本函数是一个实现基本通信水印模板的函数，对图像进行了简单的加噪处理(This function is a realization of basic communication watermark image template function, the simple addition to deal with the noise )

matlab入门学习的好书，很经典的，相信肯定可以对广大学习爱好者有帮助(a good book for matlab learning，i think it will useful for every downloader)

The Gaussian blur is a type of image-blurring filter that uses a Gaussian function (which also expresses the normal distribution in statistics) for calculating the transformation to apply to each pixel in the image

说明：  matlab发送端程序,256位FFT,16QAM-OFDM，最后有时域和频域图形显示(matlab sender program, 256 FFT, 16QAM-OFDM, the last times and frequency domain graphics)

说明：  如何用普通彩色照片读入进matlab中，灰度转换小程序(How to read an ordinary color photos into matlab, the grayscale conversion applet)

针对机械优化设计的matlab优化M文件集,非常有用(For optimization of mechanical optimization design matlab M-file set, very useful)

进行了小波和小波包滤波的比较，决策树重构，熵的计算(The comparison of wavelet and wavelet packet filtering, decision tree reconstruction and entropy calculation are carried out)

输入历史实测数据（34天）的汽轮机振动的日平均峰峰值取其中三十天作为历史数据样本(Enter the history of the measured data (34 days) of the turbine vibration peak average peak day from 30 days in which samples of historical data as)

说明：  Matlab 5手册，早期的 Matlab 教材，瑞典 乌普萨拉大学计算机系的教授 编写。此为中文版。(Matlab 5 Handbook. written by professors of Uppsala University in Sweden.)