buck_boost3

说明：  用matlab和lingo软件解决了数学建模大赛2000年B题。(Matlab and lingo used mathematical modeling software solutions Contest B title in 2000.)

Image comparison in a database based in grayscale histogram and using lloyd algorithm. (algo1 index image, algo2 compute the distance betwen two images, algo3 and algo4 make up all togheter)

说明：  在网上下载的好用的傅里叶变换程序 时域变频域信号分析(Fourier transform program)

In the following figure is a system of two water tanks. Mass flow into the top tank at a fixed rate q0 and exits this tank through an orifice of area A1. This exit water then flows into a second tank which has an orifice of area A2 at its bottom. Each tank has constant cross section of area A, with A>>A1,A2. (a) Determine the ODE model which governs the heights z1 and z2 of water in the system. (b) Determine the equilibrium given a fixed rate q0. (c) Linearize the system model about the equilibrium. (d) Compare the step responses of the nonlinear model and linearized model by choosing reasonable system parameters. ( (b) Plot the flow v.s. pressure drop curve with the estimated c to validate your estimation

高级数字信号处理，用各种方法包括music算法、burg法、布莱克曼法、协方差法、周期图法、自相关法进行谱估计，(Advanced digital signal processing, algorithms in various ways, including music, burg method, Blackman method, covariance method, periodogram, autocorrelation method, spectral estimation,)

基于肤色的人脸识别代码（转自MATLAB论坛）(Face recognition based on color code (from MATLAB Forum))

基于Fisher准则线性分类器设计 进一步了解分类器的设计概念，能够根据自己的设计对线性分类器有更深刻地认识，理解Fisher准则方法确定最佳线性分界面方法的原理 (Fisher linear classification criteria for classification designed to further understanding of the design concept According to the design of linear classification for a more profound understanding, Fisher understood the criteria to determine the best method of linear interface of the theory)

线性调频脉冲压缩的Matlab程序,用于建立主成分分析模型，最终的权值矩阵就是滤波器的系数，包括脚本文件和函数文件形式，与理论分析结果相比，可以动态调节运行环境的参数，可以得到很精确的幅值、频率、相位估计。( LFM pulse compression of the Matlab program, Principal component analysis model for establishing, The final weight matrix is ??the filter coefficient, Including script files and function files in the form, Compared with the results of theoretical analysis, Can dynamically adjust the parameters of the operating environment, You can get a very accurate amplitude, frequency, phase estimation.)

用impz()函数求冲激响应：用filter()函数求冲激响应 用filter()函数求余弦输入响应：用conv()函数求余弦响应：(With impz () Function Impulse Response: The filter () function used for impulse response filter () Function Cosine input response: The conv () Function Cosine response:)

about the signal processing,especially the fourier transform