Sony patents video filter tweaks to smooth out blocky edges
Sony describes a method for improving video quality by adjusting how filters are applied to color data at the edges of video blocks. The system uses a different filter design for pixels near the outer boundary of a large video segment compared to those inside it. This helps reduce visible artifacts when video is compressed and played back.
In the filing’s own words
A reduced second luminance filter has a reduced filter characteristic with respect to a second luminance filter that has a higher filter strength than a first luminance filter, or a reduced first luminance filter having a reduced filter characteristic with respect to the first luminance filter is applied, as a second color-difference filter having a higher filter strength than a first color-difference filter, to a pixel of a color-difference component located around a block boundary in a decoded image. The present technology is applicable to image encoding and decoding, for example.
What exactly they claim (claim 1)
1. An image processing device, comprising: processing circuitry configured to apply, in a case where a second color-difference filter having a higher filter strength than a first color-difference filter is applied to a pixel of a color-difference component neighboring across a block boundary within a decoded image, a third color-difference filter to a pixel of a color-difference component neighboring across a block boundary of a CTU (Coding Tree Unit), the third color-difference filter having a filter design that is different from the second color-difference filter that is applied to a pixel of a color-difference component neighboring across a block boundary inside the CTU.
Facts
- Company
- Sony (Sony Group Corporation)
- Official title
- IMAGE PROCESSING DEVICE AND IMAGE PROCESSING METHOD
- Publication number
- US20260281462A1
- Application number
- 19671448
- Filed
- May 8, 2026
- Published
- Sep 17, 2026
- Inventors
- 1
- Claims
- 18
Classified under
H04N 19/86 Electricity & electronicsH04N 19/117 Electricity & electronicsH04N 19/186 Electricity & electronicsH04N 19/82 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.