sgaussseidel

Principle Component Analysis

说明：  变换域的数字图像水印技术及图像质量评价研究(Study of digital image watermarking in frequency domain and image quality evaluation )

说明：  神经网络课件,matlab环境，感知器，Bp,Hopfield网(Neural network courseware, matlab environment, sensors, Bp, Hopfield network)

有关matlab较为基础的入门书籍。很适合初学者学习借鉴和使用。(For more matlab basic introductory books. It is suitable for beginners to learn and use.)

This file does the detection of transitions in a video by comparing the levels of histogram intensity between two consecutive frames. It shows a plot with the high levels of intensity, and the frames where transitions take place.

This is the explanation about the data encryption, and this can be mostly used in the stegnography and cryptography, This encrypts the data such as image or any data file and can be used in hiding.

This code is to find out the PSNR between two different image, which shows the quality of both images

This code is for calculate the histogram of the image

DFT变换matlab代码，fft变换matlab代码,iir变换matlab代码,经过运行检验正确(DFT fft iir matlab)

子程序，将QAM符号向量d0_J映射为二进制符号矩阵gry(Subroutines, will QAM symbol vector d0_J the mapping matrix for the binary symbols gry)