can plz explain the source code in matlab

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Sheema Khattak
Sheema Khattak 2014-4-25
评论： Walter Roberson 2014-4-29
how or on what basis selected the numerical values for matrix e.g. labels=[],features[] etc are created for image dataset to be used for multiclass svm in matlab

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Image Analyst
Image Analyst 2014-4-25
References are given in the documentation: http://www.mathworks.com/help/stats/svmclassify.html. You can read the papers to see how it's done in detail.

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Walter Roberson
Walter Roberson 2014-4-25
编辑：Walter Roberson 2014-4-25
Mark all of the images with no skin at all (showing only background) as being group 1; mark all of the images that show skin but have no skin disease as being group 2; mark all of the images that show skin disease as being group 3. These are the values that you would put into your labels vector.
I am not familiar with texture analysis to be able to guide you about what feature vectors you should create.
http://www.mathworks.com/help/images/texture-analysis-1.html
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Sheema Khattak
Sheema Khattak 2014-4-26
How would I specify that group 1=background,group 2 = no skin disease and group3=skin disease?
Walter Roberson
Walter Roberson 2014-4-29
You just create a vector of numbers. e.g., if your first row of features corresponded to a picture with no skin disease, then the first entry in the vector would be 2.

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