matlab

qrs detection in ECG signals

this program include statcom with IEEE 30 bus

用matlab所学的知识，编写最小二乘法拟合程序，以解决物理实验中的最小二乘法拟合曲线以及相关系数等的问题。(With matlab learned, the preparation method of least squares fitting procedure to solve the problems of the least-squares fitting curve and correlation coefficient physics experiments.)

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)

说明：  这是本人在做硕士论文时开发 的有关GUI 图象设计的代码(this is my master's thesis done at the development of the graphic design of the GUI code)

预报误差法参数辨识-松弛的思想，采用的是通用的平面波展开法,表示出两帧图像间各个像素点的相对情况。( Prediction Error Method for Parameter Identification- the idea of relaxation, Using common plane wave expansion method, Between two images showing the relative circumstances of each pixel.)

MATLAB对于网络定位的仿真，是针对dv-hop的算法的仿真(MATLAB simulation for network, which is based on the orientation of the dv-hop algorithm simulation)

pca进行特征提取源码，用matlab语言编写，pca即主成分分析(pca source for feature extraction using Matlab language, pca that Principal Component Analysis)

基于Yale-B和CMU-PIE 人脸库上的实验结果显示本文算法对复杂光照具有较强鲁棒性，具备提取复杂光照条件下人脸图像有效特征的能力。小波变换 特征提取 matlab仿真(Experimental results based on Yale-B and CMU-PIE face show that the proposed algorithm has a strong light on the complexity of robustness, with the extraction of complex lighting conditions in human face images effective feature capabilities. Wavelet transform feature extraction matlab simulation)

MVDR宽带相干源DOA估计中，相干信号子空间法的空间重采样的聚焦矩阵的构造的程序(Coherent signal subspace method MVDR coherent wideband DOA estimation, spatial resampling focusing matrix structure of the program)