Patent ID: 11875527
Assignee: APPLE INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method comprising:
at an electronic device having a processor:
obtaining an image of a physical environment;
determining a subset of points of the image and orientations of the subset of points using a neural network comprising layers, the layers comprising a precomputed-weight layer configured to compute an orientation for each point of the subset of points based on:
identifying an image patch to associate with each point of the subset of points; and
using the image patch associated with each point of the subset of points to determine the orientation for each point of the subset of points, wherein the orientation of each point of the subset of points is determined formulaically via the precomputed-weight layer, wherein the orientation determined by the precomputed-weight layer is independent of weights of the layers that were learned during training;

selecting crops of the image for the subset of points based on the orientations; and
generating descriptors for the subset of points of the image based on the crops of the image.