Image processing apparatus and method for reducing gradation level of image
US8670158B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2011 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Mar 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30176
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus includes a first generation portion that generates a first low-gradation image by performing a first process on an input image to reduce the number of gradations of the input image, a second generation portion that generates a second low-gradation image by performing a second process on the input image to reduce the number of gradations of the input image, a density detector that detects a density of the input image, a determination portion that determines, based on the density, a ratio at which the first low-gradation image and the second low-gradation image are blended together, and a mixing portion that blends the first low-gradation image and the second low-gradation image in accordance with the ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.