SELECTION OF MOTION VECTOR PRECISION

Organization Name

microsoft technology licensing, llc

Inventor(s)

Gary J. Sullivan of Bellevue WA (US)

You Zhou of Sammamish WA (US)

Chih-Lung Lin of Redmond WA (US)

SELECTION OF MOTION VECTOR PRECISION

This abstract first appeared for US patent application 20240414356 titled 'SELECTION OF MOTION VECTOR PRECISION

Original Abstract Submitted

approaches to selection of motion vector (“mv”) precision during video encoding are presented. these approaches can facilitate compression that is effective in terms of rate-distortion performance and/or computational efficiency. for example, a video encoder determines an mv precision for a unit of video from among multiple mv precisions, which include one or more fractional-sample mv precisions and integer-sample mv precision. the video encoder can identify a set of mv values having a fractional-sample mv precision, then select the mv precision for the unit based at least in part on prevalence of mv values (within the set) having a fractional part of zero. or, the video encoder can perform rate-distortion analysis, where the rate-distortion analysis is biased towards the integer-sample mv precision. or, the video encoder can collect information about the video and select the mv precision for the unit based at least in part on the collected information.