Please suggest me the best way to implement AR on Android

[AmoghSondur]

I want to develop an app that requires face detection and AR. Please suggest me on how to implement this using libraries or Api's.
Please suggest me best open-source libraries for AR / virtual Try on Filters.

THANKS IN ADVANCE!

 

[Deleted User]

A quick Google of "Android face detection API" reveals

https://developers.google.com/android/reference/com/google/android/gms/vision/face/FaceDetector
https://stackoverflow.com/questions/6825778/face-recognition-api
https://developer.android.com/reference/android/media/FaceDetector.Face