Method and system for enhancing digital images
US6771833B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2000 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Apr 18, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20204
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
One aspect of the invention is a method of enhancing a digital image comprising at least one image channel. At least one spatial domain segment of a plurality of spatial domain segments of an image channel is transformed from the spatial domain to the frequency domain to create at least one segment transform. The spatial domain segment comprises one of a plurality of spatial domain segments of at least one image channel. At least one noise correction function is generated in response to the segment transform. The noise correction function may then be applied to produce at least one corrected transform wherein the corrected transform depends upon, directly or indirectly, the segment transform. The corrected transform may be transformed from the frequency domain to the spatial domain to create at least one corrected spatial domain segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.