Best method to detect facial hair?

asked 2017-04-21 10:24:11 -0600

macc.n
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Hello everybody, I would like to detect if a person has beard in an image. I extract the face using the Haar Cascade and I have no idea on how to detect the beard. What is the best way to do that?

Thanks for the help.

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I'm also looking for same kind of implementation, "detect if a person has beard in an image". if you can share code of it i think it will help people who is looking to same kind of implementation.

VenkatBommina ( 2017-10-04 04:52:09 -0600 )edit

@VenkatBommina , please do not post answers here, if you have a question or comment, thank you.

berak ( 2017-10-04 04:53:46 -0600 )edit

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answered 2017-04-21 11:34:45 -0600

StevenPuttemans

20029 ●16 ●82 ●207 http://stevenputtemans...

The subsequent steps I would follow are

After extracting the face, detect facial landmarks, for example by using dlib
Then extract features around the chin regio's together with image patches
Create a local descriptor, for example an LBP histogram
Then do SVM or ANN classification between classes

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Thanks for your answer. I'm new with OpenCV, can you explain better the second and the third point?

What are the features to extract and how can I extract them?
How can i use this histogram? Is it considered as a feature for the training of the classifier?

macc.n ( 2017-04-22 06:02:56 -0600 )edit

Well

Features are local descriptions of the areas around the facial landmarks. You can use any feature descriptor in OpenCV on top of the found landmark positions.
The LBP histogram is just one kind of feature
It is indeed a training feature for the classifier

StevenPuttemans ( 2017-04-24 05:54:38 -0600 )edit

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Best method to detect facial hair?

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