Image-Segmentatin-and-Thresholding-Method

Resonance frequency-1D cavity FDTD(Fast fourier transform)Numeric-analytic-electromagnetic

指纹识别的matlab程序，实现指纹图片的二值化、细化、计算图形中心、存入数据库、指纹匹配等功能， (Fingerprint Recognition matlab procedures realize fingerprint image binarization, thinning, computing graphics center, database, fingerprint matching and other functions,)

说明：  采用FDTD计算2维光子晶体的散射和透射的可执行程序小软件(Calculated using FDTD 2-D photonic crystal scattering and transmission of the executable program small software)

用Matlab实现的DES算法。在Matlab窗口输入DESDECP(a,b,n),其中a，b表示16进制的明文和密钥，n为1表示加密，否则表示加密。(DES algorithm using Matlab. In Matlab window field DESDECP (a, b, n), where a, b indicates a hexadecimal plaintext and key, n is 1 shows an encryption, or that encryption.)

用经典龙格-库塔法和变步长的龙格-库塔法求解微分方程(Classical Runge- Kutta method and the variable step Runge- Kutta method for solving differential equations)

这是一个双馈感应电机的矢量控制仿真模型，用的是定子磁链定向(This is the vector control simulation model of doubly-fed induction motor with stator flux orientation)

说明：  非线性滤波算法,包含了现有的扩展卡尔曼滤波，无迹卡尔曼滤波(nonlinear filter algorithm)

This code can capture a frame from a vidoe in matlab.

用matlab编写的实现FFT算法的程序，可以用来计算任意长度的FFT。(Achieved with the FFT algorithm written in matlab program that can be used to calculate any length of FFT.)

QPSK调制在瑞利衰落信道的误码率性能和多重分集比较，有界面(QPSK modulation in Rayleigh fading channel the BER performance and multi-diversity compared with the interface)