Ghosting artifact reduction in temporal noise filtering
US8564724B2 · kind B2 · utility
6Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2010 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Feb 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/62
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of noise filtering of a digital video sequence to reduce ghosting artifacts, the method including computing motion values for pixels in a frame of the digital video sequence based on a reference frame, computing blending factors for the pixels based on the motion values, generating filtered output pixel values by applying the blending factors to corresponding pixel values in the reference frame and the frame, wherein selected filtered output pixel values are converged toward corresponding pixel values in the frame to reduce ghosting artifacts, and outputting the filtered frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.