zhichang

使用时域有限差分法编写的计算散射截面的简单程序(Scattering cross section is calculated using a simple program written in finite difference time domain method)

说明：  基于非负矩阵分解（NMF）的人脸特征提取算法，NMF基本思想是找到一个线性子空间W，使的构成子空间的基本图像的像素点都是正值，而且人脸图像在子空间上的投影系数也是正数(Non-negative Matrix Factorization (NMF) of facial feature extraction algorithm, NMF basic idea is to find a linear sub-space W, so that the composition of sub-space of the basic image pixels are positive, and face image in the sub-space projection coefficient is positive)

本文提出了一种基于独立分量分析的音频数字水印方法。嵌入水印时,对原始音频文件进行一级小波分解,在分解 得到的逼近分量中利用随机混合方法嵌入水印后进行小波逆变换形成嵌入水印的音频文件。仿真实验结果表明这种方 法的强鲁棒性和可行性。(Abstract:Audio p roduction is one of the important digital multimedias, which transmit becomes more and more convenient. To p revent the multimedia content from being stolen or illegally used, audio content p rotection techniques become increasingly impor2 tant so that the potential of these app lications can be reached. As the importantmethod of copyright p rotection, the digitalwater2 marking technology has been acquired widely recognition and research. This paper p resents a method of digital audio watermark2 ing based on independent component analysis. When embedding watermarking, the original audio is decomposed by single2level discrete 12D wavelet transform, watermarking is embedded by mixing randomly to the app roximation coefficient vector obtained, and the audio is single2level reconstructed receiving audio havingwatermarking. Emulated experiment results show that thismeth2 od is robust and feasible.)

我上机实验时在matlab环境上编写的一个关于滤波器的程序文件。(This is a file about filter builded in matlab.)

自己写的matlab小程序，用于解方程组。可以参考下(Their own small programs written in matlab for solving equations. Can refer to)

说明：  Execution cmd.rarExecution cmd.rarExecution cmd.rarExecution cmd.rarExecution cmd.rarExecution cmd.rar

MATLAB-SimMechanics机构动态仿真讲解教程(Dynamic simulation of MATLAB-SimMechanics bodies to explain the tutorial)

清华大学OFDM原理性讲座，比较基础。对初学者也许有点用处(Tsinghua University, OFDM principle of lectures basis of comparison. May be of some use for beginners)

leach分簇算法仿真2(基于matlab leach分簇算法仿真2(基于matlab(leach clustering algorithm simulation (based on matlab leach clustering algorithm simulation (based on matlab)

小波去噪matlab程序，有demo，本人已运行，能用，大家可以试一试。(Wavelet denoising matlab program, demo, I have to run, can be used, we can try.)