PCA

this function to image processing in matlab

本程序本人在matlab环境中处理电控发动机中处理点火波形，方便分析点火波形从而诊断故障。(The procedure is designed by myself in the matlab environment to deal with electronically controlled engine ignition waveform, to facilitate analysis of the ignition waveform to diagnose the problem.)

本代码主要讲述了抛物型偏微分方程的向前Euler格式的差分解法。代码简单，高效。(This code mainly tells the story of parabolic partial differential equations of Euler forward format of finite difference method. The code is simple, efficient.)

求解两幅压缩前后图片A和B之间的峰值信噪比(To find the PSNR (peak signal-to-noise ratio) between two intensity images A and B, each having values in the interval[0,1]. The answer is in decibels (dB).)

基于最小二乘法和相关系数法的系统辨识方法(Based on the least squares method and correlation coefficient law system identification methods)

采用仿射变换通过反复循环分别绘制出植物生长模拟图和Sierpinsk三角形分形图案，是matlab的应用(Affine transformation by using repeated cycles of plant growth simulation were drawn map and Sierpinsk triangular fractal pattern, the application is matlab)

独立向量分析（IVA）是对独立成分分析（ICA）算法的一种扩展，将ICA中的单变量成分扩展为多维变量成分，可有效避免卷积盲源分离过程中的排序模糊性问题。(Independent vector analysis (IVA), a multivariate extension of independent component analysis, tackles the convolutedly mixed blind source separation (BSS) problem in a way to avoid the permutation problem by employing a multivariate source prior of the short-time Fourier transform (STFT) components. )

CS 算法，SAR成像的一种基本方法,通过CS校正得到SAR图像(One of the SAR imaging algorithms,CS algorithm )

说明：  本文件夹包含的是针对电话交换系统的C51程序源代码，包含了电话串口之间的通信功能，以及控制回铃音的程序源代码(This folder contains the telephone exchange system for the C51 source code, including a telephone communication between the serial port, and control ring back tone of the program source code)

采用离散傅立叶变换实现的低通滤波器，希望对你们有用，MATLAB实现(discrete Fourier transform of the low-pass filter, and I hope to you useful MATLAB)