2D recursive de-banding
US12266082B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 2022 |
| Grant date | Apr 1, 2025 |
| Priority date | — |
| Expiry date | Feb 18, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/117
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of recursive filtering of image data includes receiving sequentially a plurality of original pixel values, multiplying an original pixel value of a current pixel of the plurality of pixel values by a dynamically varying recursion coefficient, adding recursively filtered pixel values from left and right neighbors of the current pixel, retrieved from a memory buffer holding filtered pixel data from a previous image line, multiplying the added recursively pixel values by 1 minus the dynamically varying recursion coefficient, adding the two multiplication results together to yield a filtered pixel value for the current pixel, writing the filtered pixel value for the current pixel back into the memory buffer, and displaying the filtered pixel value on a display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.