Samsung patents video decoding that guesses missing motion data
Samsung describes a method for decoding video where the system guesses missing motion data instead of receiving it in the file. It uses specific rules to fill in these gaps when a video block is predicted from two different reference frames.
In the filing’s own words
A method of decoding motion information includes: identifying a type of omission motion information not included in a bitstream from among a plurality of pieces of motion information used to decode a current block that is inter predicted; obtaining the omission motion information by using a predetermined method; and decoding the current block based on the plurality of pieces of motion information including the obtained omission motion information.
What exactly they claim (claim 1)
1. A method of decoding motion information, the method comprising: when a current block is bi-predicted, obtaining, from a bitstream, information indicating whether motion information is omitted or not; obtaining, from the bitstream, a motion vector difference for a list 0; if the information indicates that the motion information is not omitted, obtaining, from the bitstream, a motion vector difference for a list 1, a reference picture index for the list 0 and a reference picture index for the list 1; if the information indicates that the motion information is omitted, determining the motion vector difference for the list 1 using a predetermined first method without obtaining from the bitstream, and determining the reference picture index for the list 0 and the reference picture index for the list 1 using a predetermined second method without obtaining from the bitstream; and decoding the current block using the motion vector difference for the list 0, the motion vector difference for the list 1, the reference picture index for the list 0 and the reference picture index for the list 1.
Facts
- Company
- Samsung (SAMSUNG ELECTRONICS CO., LTD.)
- Official title
- Apparatus and method for encoding motion information, and decoding apparatus and method
- Patent number
- US12739421B2
- Application number
- 19028946
- Filed
- Jan 17, 2025
- Granted
- Sep 15, 2026
- Inventors
- 2
- Claims
- 3
Classified under
H04N 19/513 Electricity & electronicsH04N 19/176 Electricity & electronicsH04N 19/44 Electricity & electronicsMore from Samsung in AI & software
- Samsung patents tool to erase objects from photos using AI Sep 24, 2026
- Samsung patents drawing objects into photos with AI Oct 15, 2026
- Samsung patents AI that creates personalized exercise videos Sep 10, 2026
- Samsung patents AI summaries for paused TV shows based on your viewing habits Sep 24, 2026
- Samsung patents turning chat conversations into image prompts Oct 1, 2026
Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.