grad_conj_md

用MATLAB编写的指纹处理程序，不过要自己改图像输入。程学中并没有压缩图像(Prepared using MATLAB fingerprint process, but to change their image input. CHENG Xue did not compress images)

说明：  用matlab实现的肤色检测，采用CbCr椭圆聚类算法，克服了高光的干扰，能很好的把肤色分割出来。(Skin color detection using matlab implementation, using CbCr elliptical clustering algorithm, to overcome the interference of high light, the color can be a good split.)

说明：  The back lifting discrete wavelet transform using the 9-7 Antonini filters

四阶龙格库塔法解内弹道方程，具有很好的精度，程序通俗易懂(Fourth-order Runge-Kutta method solution trajectory equation for interior_ballstic,)

计算PSNR。可直接调用，两个输入参数im1,im2为两个图象序列，返回值为PSNR的值。(Calculation of PSNR. Can be called directly, two input parameters im1, im2 two image sequences, the return value is the PSNR.)

generates the output sequence of a binary convolutional encoder G : N x LK Generator matrix of a convolutional code K : Number of input bits entering the encoder at each clock cycle. input: Binary input sequence state: State of the convolutional encoder termmode= trunc for no termination with all-0 state Copyleft: Won Y. Yang, wyyang53@hanmail.net, CAU for academic use only X = Known frequency-domain training symbol y = Time-domain output of the channel H_est = Estimate of the channel response

求解大型线性方程组的GMRES方法，文件显示了详细的算法和原理(For solving large linear equations of the GMRES method, the file shows the detailed algorithm and theory)

上传几个关于线阵RLS算法、圆阵LMS算法、矩形波以及SNR的matlab源代码，都可以出图，希望对大家有用！(From a few RLS algorithm on the linear array, circular array LMS algorithm, as well as the SNR of the rectangular wave matlab source code, can be a diagram, useful for all of us hope!)

信号y=sin(2*pi*f1*t)+sin(2*pi*f2*t)加上信噪比为2高斯白噪声的傅里叶变换，分别画出时域和频域图(Signal y = sin (2* pi* f1* t)+ sin (2* pi* f2* t) plus noise ratio for two Gaussian white noise of the Fourier transform, respectively, to draw the time domain and frequency domain)

基于matlab的数字水印的添加以及提取(Matlab-based digital watermarking add and extract)