On Nov 24, 6:05=A0am, amit <amiteshkuma...@gmail.com> wrote: > Hello Everyone > =A0I am having an image of dimension 512*512 in square shape.I want to se= lect corner point of this image as feature point. anyone could help me to w= rite the code for this feature extraction process using MATLAB. > > =A0 Thanks -------------------------- Upgrade to R2010b and get the new cornermetric function built in to the Image Processing Toolbox: cornermetric Create corner metric matrix from image Description c =3D cornermetric(I) generates a corner metric matrix for the grayscale or logical image I. The corner metric, c, is used to detect corner features in I and is the same size as I. Larger values in c correspond to pixels in I with a higher likelihood of being a corner feature. c =3D cornermetric(I, method) generates a corner metric matrix for the grayscale or logical image I using the specified method. Valid values for method are: Value Description 'Harris' The Harris corner detector. This is the default method. 'MinimumEigenvalue' Shi and Tomasi's minimum eigenvalue method.

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11/24/2010 2:26:42 PM

ImageAnalyst <imageanalyst@mailinator.com> wrote in message <ccb270d6-009c-4bac-99db-a7c5ecbe5f39@s4g2000yql.googlegroups.com>... > On Nov 24, 6:05 am, amit <amiteshkuma...@gmail.com> wrote: > > Hello Everyone > > I am having an image of dimension 512*512 in square shape.I want to select corner point of this image as feature point. anyone could help me to write the code for this feature extraction process using MATLAB. > > > > Thanks > > -------------------------- > Upgrade to R2010b and get the new cornermetric function built in to > the Image Processing Toolbox: > > cornermetric > > Create corner metric matrix from image > Description > > c = cornermetric(I) generates a corner metric matrix for the grayscale > or logical image I. The corner metric, c, is used to detect corner > features in I and is the same size as I. Larger values in c correspond > to pixels in I with a higher likelihood of being a corner feature. > > c = cornermetric(I, method) generates a corner metric matrix for the > grayscale or logical image I using the specified method. Valid values > for method are: > Value Description > 'Harris' The Harris corner detector. This is the default method. > 'MinimumEigenvalue' Shi and Tomasi's minimum eigenvalue method. thanx a lot ImageAnalyst.. If possible provide me the matlab code for Harris Corner Detector method...it will be great help for me ...

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11/24/2010 2:43:03 PM

The best place to look first is always the File Exchange: http://www.mathworks.com/matlabcentral/fileexchange/9272-harris-corner-detector

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11/24/2010 2:56:04 PM

"Image Analyst" <imageanalyst@mailinator.com> wrote in message <icj923$rsb$1@fred.mathworks.com>... > The best place to look first is always the File Exchange: > > http://www.mathworks.com/matlabcentral/fileexchange/9272-harris-corner-detector hello Image Analyst i downloaded this file from file exchange. when i am running this Harris. m file , i get a image . but when i move the mouse on the excuted image and click as par given instruction ,than i got the following message on the command window -- Warning: Image is too big to fit on screen; displaying at 67% > In imuitools\private\initSize at 73 In imshow at 264 In Harris at 7 PIP = Empty matrix: 0-by-2 Warning: Image is too big to fit on screen; displaying at 67% > In imuitools\private\initSize at 73 In imshow at 264 In Harris at 80 What should i do to get the feature point succesfully.plz suggest me .....

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11/26/2010 10:59:05 AM

On Nov 26, 5:59=A0am, "amitesh kumar" <amiteshkuma...@gmail.com> wrote: > hello Image Analyst > i downloaded this file from file exchange. > What should i do to get the feature point succesfully.plz suggest me ....= .. ----------------------------- amitesh kumar: You should try to contact the author, but since he probably won't answer, you should try to debug it yourself. I have no idea what the internal code of that File Exchange submission is doing, but I think you could debug it as well as I could. Secondly I would upgrade to the newest MATLAB and try to run the built-in corner detection function. These are the things I would do if it were me that had to get this working. Good luck, ImageAnalyst

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11/26/2010 2:00:14 PM

hallo firends, Can any body help me write this below code into MATLAB object oriented code or C code form please? M=50; % total number of periods. (choose for 1s duration) f0 = 50; % fundamental AC frequency T0 = 1/f0; %fundamental AC period T = M*T0; %Time for M periods (integer M) N=30; % sample points per period. dt = T0/N; % Sample at N points per period (integer N > 20) t = dt*[1:M*N-1]; % Sampling time array A0=120/2; % amplitude of AC signal. Divide by 2 or maybe sqrt (2) ? AC=A0*sin(f0*t*2*pi); % create AC signal. DC0=50; % DC amplitude DC=DC0*ones(1,le...

im working on a project using matlab. i want to use some of the already writen codes in C++. i want to use these codes in my project rather than writing them from scratch. is there some way or a chunk of code that might convert C++ code to matlab code or a ".c" file to ".m" file. please if anyone knows do let me know at the earliest.thanks "fatima " <fatima_naseem2002@yahoo.com> wrote in message <i8ugqn$e9p$1@fred.mathworks.com>... > im working on a project using matlab. i want to use some of the already writen codes in C++. i want to use these c...

Dear friends, I have a Matlab code to process a pure analog signal 'u'. Now I want to implement it in Simulink and I want to use it in 'Embedded Matlab fun block' so i need to transform 'Matlab code' to 'Embedded Matlab fun code' to perform the task. The Matlab code is as follows: %%%%%%%%%%%%%%%%%%%%% u_abs = abs(u); major_th = 1.5e-1; minor_th = 1.8e-2; major_peak_value = []; minor_peak_value = []; pos = 1; pos_max = 1; while ~isempty(pos) [m pos_max(end+1)] = max( u_abs( pos : pos + 10) ); pos...

I'm interested in running MATLAB code without having MATLAB installed. Particularly, I'd be interested in being able to call MATLAB code from Java (!!) or C (less desirable), because if I say, make some application that uses MATLAB code, then I don't wanna require users who download it to have MATLAB installed. What is the best route to take with this? Is it possible to simply interface MATLAB code from Java? On Jan 17, 12:32 pm, "Rob B" <rrbramb...@gmail.com> wrote: > I'm interested in running MATLAB code without having MATLAB > installed. Particu...

hi, This is praneeth doing my final year request you send me the amtlab code for the project titled '3D spiht image compression '. I like to do this project and working for it .Please make sure that it is posted as earlier as possible. thanking you praneeth This is not a place to come and request people to do your work for you. ...

Hi I've programmed a matlab code and i want to use it on my home computer. The problem is that matlab isn't installed. Is there any possibility to run a matlab code without matlab? Thanks uwe ugarcia > Is there any possibility to run a matlab code without matlab... no us ugarcia <uwe.gallaun@stud.unileoben.ac.at> wrote in message <7936ab9b-c811-44e3-a59d-8e3bbd877756@a26g2000prf.googlegroups.com>... > Hi > I've programmed a matlab code and i want to use it on my home > computer. The problem is that matlab isn't installed. Is there any > possibility...

hello guys... I am in urgent need of something which can change my MATLAb code to C or C++ code. I have to run this C, c++ code in Code composer studio and feed the program into DSP emulator EVDM642. Code composer studio does not support MATLAB... So, its important to convert the code into C or C++.. This is my semester project and I have to give the presentation on 18th november...or else I will be failed.. Please help me guys....Tell e something which changes MATLAb to C/C++. Thanx in advance. On 16 Nov., 05:42, "Tarun " <tarunsa...@gmail.com> wrote: > hello guys... >...

I wrote a code in matlab 7a andand it was working over there then i changed computer which was having matlab realease 2009a and it is not working If i install Matlab 7 release 14, will my code work again thanks "moonman" wrote in message <ipmsl7$23v$1@fred.mathworks.com>... > I wrote a code in matlab 7a andand it was working over there > then i changed computer which was having matlab realease 2009a and it is not working > > If i install Matlab 7 release 14, will my code work again thanks Can you be more specific about the fact that your code is not working in...

I am using matlab 6.5.0. Today, when I wrote some codes in the M-editor and run by using F5, all contents of the codes appear in the main matlab window. This is quite strange and never happened before. I tried to shorten the codes and run some simple test. Still the same. So it has nothing to do with what I wrote in the program. I suspect that I turned on some setting in matlab without realizing it. Anyone can give a hint on how to turn this display off? Thanks. You probably turned echo on. Try echo off all Or go to File -> Preferences -> Command Window and uncheck Echo on HTH P...

Hi All, I have been working with neural network toolbox in matlab 7 for the calibration and validation optimization problems. but i wanna to do it with matlab code. is it possible to transform the things that happen in toolbox, training process and adapting outputs get via code.. is there anyone who transform the things happen in toolbox to codes. "murat " <muratt59@gmail.com> wrote in message <iabd8c$8pc$1@fred.mathworks.com>... > Hi All, > > I have been working with neural network toolbox in matlab 7 for the calibration and validation optimization...

Hi all, Anyone could help me on translate this programming ROI detection written in Visual C into Matlab? Actually this code about hand vein ROI extraction. Thank you //********************************ROI DETECTION***************************/ //surfaceIn-filled image (extracted finger region) //surfaceOriGray-original grayscale image //surfaceOut0-align filled image //surfaceOut-align segmented grayscale image void putBackAlignResize(SDL_Surface *surfaceIn, SDL_Surface *surfaceOriGray, SDL_Surface *surfaceOut0,SDL_Surface *surfaceOut, unsigned int refPointX, unsigned int refPointY) { //size...

ENGSIM is an Engineering Simulation & Graphics Library for Microsoft Visual C++. It has all Matlab features and functions. 2 to 20 Times Faster than MATLAB. Very Easy to program. Use the same programming syntax as MATLAB, ANSI C/C++. Graphics Support is Very Good. Support Negative Indexing for Array/Matrix, Complex Array and Complex Matrix. Support Fix-point/Floating-point Communications Engineering and Signal Processing Simulation. Support Statistical Analysis. Support User- Defined Classes. Support User-Graphics Development ...

I need MATLAB code for face detection (without Neural Network, which usese image processing techniques)togather with the algo. used in the code. pls help me. SHAKIL ...

Hi i want a sample MATLAB code about calibration detection in (Abandoned Object Detection in Crowded Places) area. thank you ...

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