Method of repairing scratches in digital images
US7324704B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2003 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Oct 4, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/77
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of repairing scratches in a digital image includes counting the number of abnormal pixels among neighboring pixels of a selected pixel. The selected pixels that are surrounded by abnormal pixels in a number greater than a predetermined value are designed as particular pixels. An area surrounding each particular pixel is divided into a plurality of blocks. Furthermore, brightness difference between two of the blocks are calculated. Scratch pixels are found from the particular pixels based on brightness difference between blocks. Then, an area surrounded by scratch pixels are subdivided and filled up. Thereby, the scratch pixels can be precisely found and repaired without the need of hardware.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.