Method of multi-frame image noise reduction
US8953903B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2011 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | Aug 21, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of multi-frame image noise reduction suitable for an image-capturing device includes following steps: obtaining a current frame and multiple reference frames; defining a mask and a target point in the mask; judging whether the target point pixel of the current frame is on an edge according to an edge map of the frame; when the pixel is on the edge, using the pixels in the reference frames on the edge to calculate a replacement result; when the target point pixel is not on the edge, using the pixels in the reference frames surrounding the target point to calculate a replacement result; after that, generating a pixel corresponding to the position of the target point in an output image according to the replacement result; further, moving the mask and going back to judge whether the pixel of the target point of the current frame is on the edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.