Artifact removal method and system for contoured images and video
US9042644B2 · kind B2 · utility
4Cited by
13References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 27, 2014 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Jan 27, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method that reduce or eliminate step-contouring generated by compression algorithms are provided because many types of compression algorithms introduce a step-contoured artifact for images and video with slow gradients. The system and method restores the gradient to a piece of content by detecting a start and end of the step contour in each row and column of the piece of content and increments a pixel in certain regions of the row or the column to restore the gradient in the piece of content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.