/Patent Tracker
SamsungGranted patentAI & softwareInterest 3/10

Samsung patents video compression method for better motion prediction

Samsung has been granted a patent for a method to improve how video data is compressed and decompressed. The technique adjusts the precision of motion vectors, which track how objects move between frames, by scaling distances based on specific pixel units to reduce data size.

Why it mattersThis is a standard improvement in video coding algorithms that helps streaming services and devices save bandwidth without noticeably changing video quality.

In the filing’s own words

A method of decoding motion information according to an embodiment includes: obtaining information indicating a disparity distance for determining a prediction motion vector of a current block; scaling the disparity distance corresponding to the obtained information, based on a comparison result between a base pixel unit and a smallest pixel unit indicatable by a motion vector of the current block; determining a prediction motion vector candidate changed by the scaled disparity distance from a base motion vector of the current block from among one or more prediction motion vector candidates as the prediction motion vector of the current block; and determining the motion vector of the current block by using the prediction motion vector.

What exactly they claim (claim 1)

1. A method of decoding motion information, the method comprising: obtaining, from a bitstream, information about a precision of a pixel unit in a predetermined mode; obtaining, from the bitstream, information indicating a disparity distance for a current block; obtaining, from the bitstream, information indicating a disparity direction for the current block; if the precision of the pixel unit is a predetermined precision, determining a first disparity distance based on the obtained information indicating the disparity distance; if the precision of the pixel unit is not the predetermined precision, determining a second disparity distance based on the obtained information indicating the disparity distance; if the current block is bi-predicted: determining a first motion vector for a first list of the current block by changing a first base motion vector for the first list by a first offset, wherein the first offset has a size corresponding to the first disparity distance or the second disparity distance, and a sign of the first offset corresponds to the information indicating the disparity direction; determining a second offset by scaling the first offset based on a picture order count (POC) of a current picture, a POC of a first reference picture in the first list, and a POC of a second reference picture in a second list; and determining a second motion vector for the second list of the current block by changing a second base motion vector for the second list by the second offset, wherein the second disparity distance is larger than the first disparity distance, and wherein the information indicating the disparity direction indicates one of a x-axis direction and a y-axis direction, and one of (+) sign and (−) sign.

Facts

Company
Samsung (SAMSUNG ELECTRONICS CO., LTD.)
Official title
Method for encoding and decoding motion information, and apparatus for encoding and decoding motion information
Patent number
US12750516B2
Application number
18920509
Filed
Oct 18, 2024
Granted
Sep 29, 2026
Inventors
2
Claims
3

Classified under

H04N 19/513 Electricity & electronicsH04N 19/13 Electricity & electronicsH04N 19/139 Electricity & electronicsH04N 19/176 Electricity & electronicsH04N 19/184 Electricity & electronicsH04N 19/70 Electricity & electronics
Read the full filing (official PDF) ↗ Open in the Patent Tracker

More from Samsung in AI & software

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.