MATLAB

OTSU Gray-level image segmentation using Otsu s method. Iseg = OTSU(I,n) computes a segmented image (Iseg) containing n classes by means of Otsu s n-thresholding method (Otsu N, A Threshold Selection Method from Gray-Level Histograms, IEEE Trans. Syst. Man Cybern. 9:62-66 1979). Thresholds are computed to maximize a separability criterion of the resultant classes in gray levels. OTSU(I) is equivalent to OTSU(I,2). By default, n=2 and the corresponding Iseg is therefore a binary image. The pixel values for Iseg are [0 1] if n=2, [0 0.5 1] if n=3, [0 0.333 0.666 1] if n=4, ... [Iseg,sep] = OTSU(I,n) returns the value (sep) of the separability criterion within the range [0 1]. Zero is obtained only with images having less than n gray level, whereas one (optimal value) is obtained only with n-valued images.

FDTD仿真，空气和玻璃界面的折射现象，可以观察到电磁波的折射现象。(A source of electric field is defined at the top edge of the spatial domain,(in glass) on the left half, which is a hard sinusoidal source, in that it does not change its value due to interference from external fields i.e in other words,the source is a perfect electric conductor. )

说明：  Dijkstra算法求解非负有向图的最短路径，算法的MATLAB实现。分享推荐。(Dijkstra algorithm to the graph of non-responsibility shortest path algorithm of MATLAB implementation. Sharing recommended.)

斑点消除双边滤波器，根据UsMB2010年的文章实现。(speckle reducing bifilter )

x为观测信号，y为估计信号">

levy法编制辨识程序，基本精确辨识了系统各个参数，因为误差准则的原因，系数略有差别。(levy convention identification procedures, precise identification of the basic parameters of the system, because of the reason of the error criterion, the coefficient slightly different.)

matlab绘制带通系统函数的功率谱，不是信号的功率谱(The power spectrum band-pass system function)

Three different kinds of trajectory generators. including linear simple.Linear accelerated. and circular

环天线的建模以及天线表面的电流分布三维图，小环的辐射强度、天线阻抗以及辐射方向图(Loop antennas and antenna modeling three-dimensional surface current distribution map, a small ring of radiation, the antenna impedance and radiation pattern)

Ribbon frome codeproject