公开(公告)号：US11238297B1

公开(公告)日：2022-02-01

申请号：US16580223

申请日：2019-09-24

Applicant: Apple Inc.

Inventor： Oliver Thomas Ruepp ,  Vimal Thilak

IPC: G06K9/32 ,  G06T3/60 ,  G06K9/46 ,  G06N3/08 ,  G06N3/04 ,  G06T7/73

Abstract: In one implementation, a method includes: obtaining an input image, wherein the input image is captured by an image sensor having a rotational orientation with respect to a direction of gravity; obtaining a gravity direction estimation associated with the rotational orientation of the sensor; generating, from the input image, a rotationally preprocessed input image by applying one or more transformations to the input image based on the gravity direction estimation; providing the rotationally preprocessed input image to the machine learning sub-system; and identifying, using the machine learning sub-system, a visual feature within the rotationally preprocessed input image.