Image processing device and image correction device
US8300934B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2010 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Jan 17, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/92
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing device includes a dividing unit which divides a brightness histogram of an input image into a plurality of value regions according to gradation, a ratio computing unit which computes the number of pixels of each value region divided by the dividing unit and the number of pixels of the input image, respectively, and computes a ratio or a magnitude relation of the number of pixels of each value region with respect to the number of pixels of the input image, and a control-point computing unit which computes a control point, which specifies a shape of a correction curve for image correction according to a feature of the input image, based on the ratio or the magnitude relation of each value region computed by the ratio computing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.