zhiliudianji

基于 DCT(离散余弦变换 )域的信息隐藏算法是目前应用最广的变换域算法 ,此类算法的最大不足是嵌信息量小。通过分析 DCT域隐藏算法隐藏容量少的原因 ,提出了一种大容量的 DCT域信息隐藏算法。算法首先对载体图像进行频谱均匀化处理 ,然后对图像进行全局 DCT变换 ,并将隐藏信息嵌入到载体图像的低频 DCT系数上 ,信息嵌入采用分段量化的方法实现 ,提取隐藏信息时不需要原始载体图像。实验结果表明 ,该算法的嵌入容量大 ,不可感知性好。(Based on DCT (discrete cosine transform) domain information hiding algorithm is the most widely used transform domain algorithms, the largest of these algorithms is the lack of a small amount of information embedded. Hiding Algorithm for DCT domain by analyzing the hidden reasons for the low capacity, a large capacity of information hiding algorithm for DCT domain. Firstly, the spectrum of the carrier image homogenization, and then the image is a global DCT transformation, and hidden information embedded into the image of the low-frequency DCT coefficients, the information embedded in the methods used to achieve sub-quantization, extract hidden information without the original Vector image. Experimental results show that the algorithm embedding capacity, can not be perceived good.)

利用GS迭代算法求解经过高数值孔径物镜聚焦产生列阵的Matlab程序。(the matlab program for generating array at the focus of high numerical aperture. the phase distribution is obtained.)

详细的介绍了FIR滤波器的结构，对于初学者来说这是一篇不错的代码，结合matlab开发环境(Detailed description of the structure of the FIR filter, for beginners, this is a good code, combined with matlab development environment)

FDTD算法编程，利用matlab软件。包含一维和二维情况(FDTD algorithm programming, using matlab software )

MATLAB file to describe the lpcc fuction

matlab code for digital modulations

Canonical Correlation Analysis

产生QPSK的简单程序，先产生0到3的随即数字，用这些数字产生相位，然后产生QPSK信号！(Get QPSK！)

小波图像分析 小波图像分析 小波图像分析 小波图像分析 小波图像分析 小波图像分析 小波图像分析 小波图像分析 小波图像分析 小波图像分析(wavelet image analysis wavelet image analysis wavelet image analysis Image Analysis Wavelet image analysis wavelet image analysis wavelet image analysis wavelet image analysis wavelet image analysis wavelet image analysis Image Wavelet analysis of image analysis wavelet image analysis wavelet image analysis wavelet image analysis wavelet image analysis Image Analysis)

14 bus power flow analysis with fault using psat