Patent ID: 11924467
Assignee: GOOGLE LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method, comprising:
mapping a location of a pixel of a current block from a video frame to a sphere;
determining, on the sphere, a motion prediction of the pixel from the location of the pixel to a predicted location of the pixel according to rotation parameters associated with the current block;
mapping the predicted location of the pixel from the sphere to the video frame;
determining a motion vector based on the location and the predicted location within the video frame; and
encoding the current block based on the motion vector,
wherein a block partition size for the current block is determined based on a density distortion according to a location of the current block on the sphere and is between a minimum block partition size and a maximum block partition size defined for a latitude range of the sphere which includes the location of the current block on the sphere.