the9part

自己编写的一个随动系统的kalman滤波模型(I have written a servo system of the kalman filter model)

Simplicity code for heart sound

实现信号的稀疏分解，基本的分解，优化为互相关，再优化为fft(Realization of signal sparse decomposition, basic decomposition, optimization of cross-correlation, optimization for FFT)

a self- embedding block wise fragile watermarking scheme with tamper detection and content recovery capability. The proposed scheme embeds the shuffled extensive ten bit Recovery data and two bit Authentication data of the image block into the least significant bits (LSB) of its corresponding mapping block.The integrity of a test block is decided by comparing 2×2 non overlapping block of the test block with its corresponding mapping block. Experimental results show that the suggested scheme outperforms conventional self recovery fragile watermarking algorithms in alteration detection as well as in tamper recovery of the image.

对于一个含有明显噪声的心电信号进行卡尔曼滤波处理，最大程度地 “还原”信号，达到去除噪声的目的。卡尔曼滤波（看成维纳滤波的一种实现方法）的特点如下： a) 是根据上一状态的估计值X(n-1)和当前状态的观测值Z(n)推出当前状态的估计值X(n)的滤波方法,不需要用过去的全部观测值。 b) 它是用状态方程和递推方法进行估计的，因而卡尔曼滤波对信号的平稳性和时不变性不做要求。 c) 使用全部观测值保证平稳性。(Kalman in matlab,if you need it,please download it.)

matlab产生随机信号，用BT法计算归一化功率(Generate random signal)

说明：  心电信号仿真数学模型建立，基于国外的一片论文的源代码，包括可调的几个关键参数。(ECG simulation mathematical model, based on a piece of paper outside the source code, including several key parameters adjustable.)

说明：  MATLAB实验的使用模板，供初学者学习和使用 (MATLAB experimental use of templates for beginners to learn and use)

说明：  用matlab做的一个电气工程课程设计界面，其中包含接入系统设计，主变压器经济比较，牛拉法解潮流及阻抗法解短路故障(包含不对称故障)(A GUI created by matlab for design class of Electrical Engineering.I hope it can help everyone who need this kind of thing. )

基于matlab的车牌识别，GUI图像显示，简洁明了，识别过程用的是模板匹配，文件齐全。(License plate recognition matlab-based GUI image display, concise, the identification process is the template matching, the file is complete.)