Image processing method, image processing apparatus, and image processing program
US8831345B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 2011 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Sep 5, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention is an image processing device which has tone mapping curve generation means for local tone correction, which generates a tone mapping curve for local tone correction using the luminance of peripheral areas for each pixel of interest within an input image; prediction means which predicts the overall luminance and/or the contrast of the image after the local tone correction on the basis of the average luminance of partial areas into which the input image has been partitioned; tone mapping curve generation means for global tone correction, which generates a tone mapping curve for global tone correction on the basis of the prediction; and correction means which integrates the tone mapping curve for local tone correction and the tone mapping curve for global tone correction so as to simultaneously execute the local tone correction and the global tone correction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.