How to find out the accuracy of facedetection?

Facedetection

asked 2019-03-29 20:06:13 -0600

I found out, how to find a rectangle that containes a face on a photo, using basic haarcascade, but now I need to return not only a rectangle coordinates, but also an accuracy. It should be some value, that could indicate an algorithm's assurance in found face.

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answered 2019-03-30 03:49:17 -0600

berak
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there are 2 ways to do this, IF you have "ground truth" information (you know the Rect, where the face should be) you can use the jaccard distance as a similarity measure.

if you haven't, you can use another detectMultiScale overload, that gives you the levelWeights.