Spatio-temporal denoising of video content based on confidence indexes
US11166019B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 10, 2019 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Jul 10, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure relates to a method for processing the noise of a stream comprising a series of images, comprising spatial filtering of a current image In in order to obtain a spatially filtered image Sn; determining a motion vector for each block B of pixels of the image Sn, from a single image Sn-1; calculating a confidence index αn[B] for each block B of image In, from the motion vector determined for B; constructing a temporal filter from the calculated confidence indices αn[B] and applying the temporal filter to the current image In in order to obtain a temporally filtered image Tn; spatial filtering of the current image In in order to obtain a spatially filtered image Dn where Dn can be equal to Sn, and obtaining a temporally and spatially filtered image Rn by applying a function combining image Tn and image Dn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.