extraction of feature of image

How to extract features from a skin cancer image?I am new in matlab..can anyone help pls

Answer 1

[Image Analyst]

Look up algorithms here: http://www.visionbib.com/bibliography/contentsmedical.html#Medical%20Applications,%20CAT,%20MRI,%20Ultrasound,%20Heart%20Models,%20Brain%20Models Pick one that seems promising and code it up in MATLAB, then come back with your code if you have MATLAB-specific questions.

In the meantime, see my image segmentation demos in my File Exchange: http://www.mathworks.com/matlabcentral/fileexchange/?term=authorid%3A31862

[Durga]

Thank u..Yes,i have seen your image segmentation demo file..it works brilliantly..now i am trying to extract features,i tried to extract feature using GLCM texture vector,but it is not working.I tried this feature code from this file which i got from mathworks fileexchange: http://www.mathworks.in/matlabcentral/fileexchange/22187-glcm-texture-features

[Durga]

When trying to run glcm code,i got this error:pls anyone suggest me how i can fix the error....plz

""Error using validatestring (line 61) Maximum recursion limit of 500 reached. Use set(0,'RecursionLimit',N) to change the limit. Be aware that exceeding your available stack space can crash MATLAB and/or your computer.

Error in imlincomb>ParseInputs (line 122) output_class = validatestring(varargin{end}, valid_strings, mfilename, ...

Error in imlincomb (line 71) [images, scalars, outputClass] = ParseInputs(varargin{:});

Error in graycomatrix (line 176) SI = floor(imlincomb(slope,I,intercept,'double'));

Error in GLCM_Features1 (line 110) GLCM2 = graycomatrix(I1,'Offset',[2 0;0 2],'Symmetric',true);

Error in GLCM_Features1 (line 111) stats = GLCM_Features1(GLCM2,0);""

[Durga]

I tried also to use set(0,'RecursionLimit',N),but it didnt worked..

[Image Analyst]

I don't have that code. Your best bet is to contact the author. If he doesn't answer, then try this: http://blogs.mathworks.com/videos/2012/07/03/debugging-in-matlab/ I'm in no better position than you to debug it. Worse actually, because you have the code and the time, and I don't. Sorry.

[Durga]

Okay Sir..thanks for helping.Actually i couldnt track what is causing the recursion_limit_overflow,though the limit i hv used in the code is in its range;tried so many methods to overcome the error,so i was asking if anyone knows how to fix this kind of type error.I will try to use different methods to correct it.

[Image Analyst]

Recursion generally means a function is calling itself inside itself. So look over the code to see if you see that happening anywhere.

Answer 2

[Star Strider]

You might find ‘Computer-Aided Diagnosis of Skin Lesions Using Conventional Digital Photography: A Reliability and Feasibility Study’ PLoS One. 2013 Nov 4;8(11):e76212 interesting, since it also includes the MATLAB code they used for feature extraction and classification.

[Durga]

Thanks,Okay..i am studying it