Sony patents video coding method that cuts memory needs
Sony describes a way to compress video by changing the order of data before applying a standard mathematical step called an orthogonal transform. This approach uses a modified matrix derived from a base one to process the difference between predicted and actual image data, aiming to reduce the amount of memory needed during encoding.
In the filing’s own words
There is provided an image processing apparatus and an image processing method for enabling suppression of an increase in a memory capacity required for orthogonal transform and inverse orthogonal transform. A second transformation matrix is derived using a first transformation matrix, a prediction residual of an image is orthogonally transformed using the derived second transformation matrix, and coefficient data obtained by orthogonally transforming the prediction residual is encoded to generate a bit stream. The present disclosure can be applied to, for example, an image processing apparatus, an image encoding device, an image decoding device, or the like.
What exactly they claim (claim 1)
1. An image processing apparatus comprising: circuitry configured to perform a permutation operation on a prediction residual of an image based on a transform type of an orthogonal transform for the prediction residual, perform the orthogonal transform on the prediction residual subjected to the permutation operation, using a base transform matrix corresponding to the transform type, and encode coefficient data obtained by performing the orthogonal transform on the prediction residual, to generate a bitstream.
Facts
- Company
- Sony (SONY CORPORATION)
- Official title
- IMAGE PROCESSING APPARATUS AND METHOD
- Publication number
- US20260303867A1
- Application number
- 19702458
- Filed
- Jun 9, 2026
- Published
- Oct 1, 2026
- Inventors
- 1
- Claims
- 14
Classified under
H04N 19/61 Electricity & electronicsH04N 19/184 Electricity & electronicsH04N 19/96 Electricity & electronicsMore from Sony 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.