Compare two faces (and their likeness)

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Is there is a way to compare two faces (perhaps with OpenCv) and get a score of their likeness? I mean to apply a facial recognition algorithm, but only between 2 faces, not on an entire dataset.

The problem is that, for example, Eigenfaces requires at least 2 training images.

face-recognition opencv
4 Answers

This article explains the whole face recognition process nicely. With face_recognition library you can identify a person even with only 1 image and then try to recognise that person in another image. This is possible because the neural network is already trained.

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