Image processing device, image processing method, and computer readable medium
US8170365B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 2009 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Sep 5, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30176
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image processing device includes, a pixel information output section that reads an image along a predetermined direction and outputs saturation information and lightness information, a dust pixel extraction section that extracts dust pixels that are candidates for pixels expressing dust existing in the predetermined direction, a lightness-changed pixel extraction section that extracts lightness-changed pixels, a correction object pixel extraction section that, from among the dust pixels extracted by the dust pixel extraction section, extracts, as pixels that are objects of correction, dust pixels that have not been extracted as lightness-changed pixels and dust pixels in whose vicinities lightness-changed pixels do not exist, a correction section that corrects both of the information of the pixels, using both of the information of neighboring pixels of the pixels, and an image information output section that outputs image information that includes information expressing pixels corrected by the correction section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.