Amazon patents video compression method for mixed-resolution frames
This patent describes a method for compressing video where frames are stored at different sizes. It uses specific scaling factors to adjust how the system finds matching parts of the video between frames to reduce file size.
In the filing’s own words
Frames may be encoded at different resolutions. A scaling factor may be used to scale video frames used for translational or affine motion compensation. Various improvements to motion compensation processes for different resolution video frames are described.
What exactly they claim (claim 1)
1. A method, comprising: obtaining video content and a motion vector between a block of samples in a prediction frame of the video content and a previous frame of the video content that has been encoded and decoded; determining a first ratio of the previous frame to the prediction frame in a first dimension and a second ratio of the previous frame to the predicted frame in a second dimension, wherein either the first ratio, the second ratio, or both are greater than 1; identifying a block of samples in the previous frame using a location of the block of samples in the prediction frame, the motion vector, the ratio in the first dimension, and the ratio in the second dimension; and coding the block of samples in the prediction frame based on the block of samples in the previous frame of the video content using a translational motion compensation process, wherein non-adjacent samples of the block of samples in the previous frame are used to determine motion compensated pixel values for the block of samples in the prediction frame, wherein the non-adjacent samples are selected based on the first ratio and the second ratio.
Facts
- Company
- Amazon (Amazon Technologies, Inc.)
- Official title
- Video frame translational motion compensation
- Patent number
- US12744929B1
- Application number
- 18745552
- Filed
- Jun 17, 2024
- Granted
- Sep 22, 2026
- Inventors
- 3
- Claims
- 23
Classified under
H04N 19/521 Electricity & electronicsH04N 19/119 Electricity & electronicsH04N 19/139 Electricity & electronicsH04N 19/172 Electricity & electronicsH04N 19/176 Electricity & electronicsMore from Amazon in AI & software
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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.