matlab getframe

Visual c ++ is one of the mainstream application development environments. The development environment is powerful and the development process is fast. In terms of scientific computing, function libraries are not rich enough, and it is inconvenient to read and display data graphs. MATLAB is a combination of numerical analysis, matrix computing, signal processing, and graphic display. It contains a large number of highly integrated functions for callin

[Reprint]matlab Dynamic drawing three-dimensional heart shape diagram Matlab Dynamic drawing three-dimensional heart chart program as follows, the core is the Isosurface function, Verts stores the coordinates of the heart surface points, and faces stores the connection order of each point. Clear filename= ' heart '; [X,y,z]=meshgrid (Linspace ( -3,3)); P= (x.^2+ (9/4) *y.^2+z.^2-1). ^3-x.^2.*z.^3-(9/80

　Total contents of this blog article category: http://www.cnblogs.com/asxinyu/p/4288836.htmlMATLAB and C # mixed programming article catalog: http://www.cnblogs.com/asxinyu/p/4329753.htmlMATLAB is still the same as the annual release rate of 2 releases. March 2015 r2015a (version 8.5) was officially released. In the new version, there are four new toolboxes and 79 product updates. Many of the new features in MATLAB 2015a are upgraded on the basis of R

In scientific research and engineering application, the algorithm often has to do a lot of mathematical calculation, including matrix operation. These operations are generally difficult to use manually accurate and fast, but the use of computer programming corresponding procedures to do approximate calculation. The current popular use of basic, FORTRAN and C language programming program, not only need to have a deep understanding of the algorithm, but also need to master the language used in the

). Name); Disp (cm); eval (cm); Catchdisp (LastErr); Disp ('IGNORE If the file is a C + + file which is not a Mex file (ie without a mexfunction inside)'); ENDENDCD (olddir);After the creation, we can click the Run button in MATLAB to compile the CPP file, after compiling you will find that the folder is more than the suffix. mexw64 file, where w represents the Windows system, 64 for the system is 64-bit.Next we test whether the ncut algorit

This is a more difficult problem, please see:Here are seven points, I want to sort these seven points, and then connect to achieve the following effect:How does this come true? First write the steps and then the code:1, first identify the centroid of multiple points2. Connect and draw points via centroidOff-topic, about the connection and PIP operation is how to do, this is through the original image of the data modified to doDirectly to the code, as well as the picture saved in the code of the

MATLAB Image Processing _ Fourier transformation, matlab Fu Li Use relevant functions such as fft in matlab. The Code is as follows: Clear‑clc‑img‑imread('test.jpg '); img = rgb2gray (img); f = fft2 (img); % Fourier transform f = fftshift (f); % symmetric image r = real (f ); % calculate the real part I = imag (f) of the image in the frequency domain; %

The method of random disturbance of training samples in matlab, matlab Samples Use randperm () to generate random seeds, and then swap locations for random sample extraction. Official content: The built-in function randperm (n) of Matlab generates random orders of integers ranging from 1 to n without duplicates. Then, we can use it to obtain random numbers withou

The P file is a pre-parsed version (preparsed version) corresponding to the M file ). Because when you execute the M file for the first time, Matlab needs to parse the file (PARSE) Once (the parsed content after the first execution will be placed in the memory for the second execution, that is, the second execution does not need to be parsed), which virtually increases the execution time. So we will explain it in advance. When we use the M file later,

); Percent moving fromQnearest an incremental distanceinchThe direction of Qrand Theta= atan2 (sample (1)-closestnode (1), sample (2)-closestnode (2)); %direction to extend sample to produce new node Newpoint= Double (Int32 (Closestnode (1:2) + stepsize *[sin (theta) cos (theta)])); if~checkpath (Closestnode (1:2), newpoint, map)%ifExtension of closest nodeinchTree to the new point isfeasible failedattempts= failedattempts + 1; Continue; EndifDistancecost (Newpoint,goal) Break; End%goal reached

Basic Learning of MATLAB ---------------- extreme values and integral problems of functions MATLAB implementation

MATLAB Image Processing _ homomorphic filtering, matlab Image Processing homomorphic Homomorphic filtering: uses the generalized superposition principle to filter the homomorphic system. Homomorphic filtering is an image processing method that combines frequency filtering and grayscale transformation. It relies on the image illumination/reflectivity model as the basis for processing in the frequency domain,

Matlab reads 3D point cloud data Stanford rabbit, matlab Stanford Where the point cloud data is Stanford rabbit. After the 3D point cloud reconstruction, people can take a good look, but simply read the program. As a beginner, it is better, and further research is still behind, if you have the opportunity to continue uploading, for example, delauny triangle mesh division, you also want to further study the

MATLAB learning notes (2): symbol computation _-_ 1, matlab _-_ 1 2.1 symbol object and Symbol Expression Create a basic symbol object syms aCreate a basic symbolic number sym('num')sc=sym('num') The difference between a symbolic number and a numeric number >> clear>> a=5+pi,b=sym('5+pi'),ca=class(a),cb=class(b),vpa(a-b)a = 8.1416 b = pi + 5 ca =doublecb =sym ans = -0.0000000000000001224646799147353

Algorithm code Solinit = bvpinit (linspace (, 5), [1 0]); % linspace (, 5) is the initial mesh, [] is the initial estimated value Sol = bvp4c (@ twoode, @ twobc, solinit); % twoode and twobc are the functions of the differential equation and the boundary condition, respectively, solinit is structured X = linspace (); % determines the X range y = Deval (sol, x); % determines the y range plot (X, Y (1 ,:)); % plot the graph % of Y-X to define the twoode function (the following code is saved as

MATLAB? Builder for. net Create MATLAB. NET and COM components MATLAB? Builder for. NET is MATLAB? Compiler's extended functions can be derived from MATLAB? The algorithm code automatically generates an independent. Net Assembly class library or Common Object Model (COM) ob

The process simulation system of WEDM (WEDM) based on BP neural network needs the design function of process database management, process effect prediction and processing parameter optimization. With the help of MATLAB's Neural network toolbox, we can set up good prediction model of process effect and parameter optimization model, which is the main function requirement of process simulation software. VB is an excellent visual programming tool software under Windows operating system, which has un

(Promotion by friends) Proficient in Matlab GUI Design (including one CD) coming soon IntroductionThis book describes the Matlab GUI Design step by step from a practical point of view based on the actual needs of Matlab Application Teaching and Engineering Application in colleges and universities, and uses a large number of design examples and typical application

://ishare.iask.sina.com.cn/f/37004900.html. Because FRR and far conflict with each other, the probability of equal error rate is equal when the two are equal. When the threshold is th, the corresponding FRR has a value and far has a value. In this way, a group of corresponding FRR and far are obtained. The far is used as the horizontal coordinate, and the FRR is used as the vertical coordinate to draw the curve, that is, the ROC curve. Then draw the Y = x curve. When the two curves intersect, th

Matlab Codes for dimensionality reduction (subspace learning) If your find these algoirthms and data sets useful, we appre Ciate it very much if can cite we related works: (Publications sort by topic) Deng Cai, Xiaofei He, Jiawei Han, and Hong-jiang Zhang, "orthogonal laplacianfaces to face recognition", in IEEE TIP, 2006. BibTeX source Deng Cai, Xiaofei He, and Jiawei Han, "Document clustering Using locality preserving-indexing", I n IEEE tkde, 200