Is Feature extraction done in FaceRecognizer

asked 2015-05-13 08:12:14 -0500

I am currently using the FaceRecognizerand I am not sure about if the feature extraction is done while I train a set of images with its corresponding subjects. I assume it does but I want to make sure because I can't find it anywhere.

I am sure that it does train the classifier since I am saving it in a path which contains a big XML file.

So the question, does http://docs.opencv.org/doc/tutorials/... happen in http://docs.opencv.org/modules/contri... ?

Thanks in advance

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Comments

1
  • "I am sure that it does train the classifier " - ofc. it does ! (that's the goal of it)
  • "does feature_detection happen there ?" - well, not really. at least, different 'features' (btw, that's a very generic word) are used with face recognition there, and it's not keypoint-based. (more 'dense')
berak gravatar imageberak ( 2015-05-13 10:11:17 -0500 )edit
1

If you use feature extraction it will have problems when you try to match a face in which you do not have features for. I tried doing SURF and SIFT on texture matching and it does not turn out well. The feature you are looking for is probably local binary pattern that you can extract to match for a similar histogram. Histogram comparison should work better unless someone prove me wrong.

fredreload gravatar imagefredreload ( 2015-05-13 23:32:45 -0500 )edit