Add face detection example

[abdou31]

Hello,
Can you add please an example for face detection using Tensorflow lite on Android device?
Thanks

[review-notebook-app]

Check out this pull request on ReviewNB: https://app.reviewnb.com/tensorflow/examples/pull/73

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[lamberta]

Hi. Your pull request is not set up correctly and is merging from master into a patch branch.
Closing this but feel free to submit another, thanks.
(Also, please sign the CLA :)

[jdduke]

Hi @abdou31, we generally don't accept wholesale example contributions without prior discussion, and it's unlikely that we'd accept a face-detection sample at this time. That said, if you want to host the sample elsewhere, we're considering building a link repository for samples that use TensorFlow Lite.

[abdou31]

Hello @jdduke, my request to a face-detection sample is that other samples (e.g object detection, image classification) can't help to solve the problem of extraction predicts from tflite model ( eye region detection with landmarks in my case ).
The first reason is that image classification and object detection used the back camera ( not the front camera ).
The second reason is that I don't have labels.txt (the file that contains classes names ) because of my project use regression not classification ( predict the eye region and draw landmarks ).