AVMetadataFaceObject yawAngle is opposite for iPad Air and iPhone XS MAX

Question

The app get a yawAngle with the front camera.

When I looking at the left.

iPad Air yawAngle is 270 or 315

iPhone XS MAX yawAngle is 45 or 90

When I looking at the right

iPad Air yawAngle is 45 or 90

iPhone XS MAX yawAngle is 270 or 315

What is the reason for above results ?

Both devices use iOS 12, and the app is using in portrate orientation only.

577

Posted by

Mumpk

Reply

Answer 1

I found if device has Multisession support then that opposite yaw angle happened.

So you can check the device using

AVCaptureMultiCamSession.isMultiCamSupported

If AVCaptureMultiCamSession.isMultiCamSupported == true then it is iPhone XS XR XS Max ... and later

else it is from iPhone X earlier

Hope this helps

Posted by

jenchote

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