Add face recognition examples

[Vincent1-python]

Can you add examples of face recognition? I'm a little white and I'm not very good at it.

[jonnor]

@Vincent1-python that might be possible, if there are some decent datasets for it. Are you aware of such datasets?

[jonnor]

To be clear, are you asking for an example of face detection (there is a face in the image yes/no), or of face recognition (the face in the picture is Jon). The two are quite different in terms of complexity

[Vincent1-python]

Face detection can be done, if face recognition can be better. Message ID: ***@***.***>

[jonnor]

Face detection can be done with a standard CNN classifier. The https://github.com/emlearn/emlearn-micropython/tree/master/examples/mnist_cnn example can be used as a base. One can use tutorials online for how to swap out to a face dataset.

Face recognition is typically done with similarity. For example, train a Siamese Network with CNNs as base, and then use cosine distance on the resulting vectors. https://keras.io/examples/vision/siamese_network/