MATLAB: SIFT feature descriptor is not working in matlab R2013a, any solution

image processingsift

I have installed Matlab R2013a. I am doing project on face recognition using SIFT but its displaying error like "Undefined function 'detectSIFTFeatures' for input arguments of type 'uint8' ".

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There is no "detectSIFTFeature" function in any Matlab version.

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MATLAB: How to save SIFT feature descriptor as an one dimensional vector.

feature_vector = [size(descriptors,1); size(descriptors,2); size(locs,1); double(descriptors(:)); locs(:)];

However, it appears that the number of descriptors output depends in part on image content, so the size of the feature vector would depend upon the image content. That is not suitable: feature vectors need to be of consistent size. You will need to figure out how to deal with that.

MATLAB: SIFT feature extraction, Knowledge base classifier

Have a look at VLFeat.

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MATLAB: How to save SIFT feature descriptor as an one dimensional vector.

MATLAB: SIFT feature extraction, Knowledge base classifier

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