Google Face Pose Detection API

Note that this only seems to do the following tasks:

- Detection: Return the location of faces in the image

- Pose estimation: Determine the direction they're facing

- Landmark estimation: Return the location of keypoints (eyes, nose, etc)

- Attribute estimation: Returns whether eyes are open, or whether the face is smiling.

In particular, this API does not provide tools to recognize faces, or to see whether two people are from the same person.