Apple Inc.
Using face detection to update user interface orientation

Abstract:

An orientation of an application user interface (e.g., text and/or content) on a display of a device may be determined by an orientation of the device relative to gravity. In situations where the orientation of the device relative to gravity does not provide a confident or accurate orientation for the application user interface, orientation of the application user interface may be determined from face orientation data. Face orientation data may be obtained from a face detection process operating on images of the user captured during a facial recognition process or during an attention detection process.