Image enhancement apparatus and image enhancement method
US9471962B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2013 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Oct 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20192
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image enhancement apparatus according to the present invention for generating an output image obtained by sharpening an input image includes a non-linear processing unit configured to carry out non-linear processing on an input image signal representing the input image, a filter unit configured to generate a second signal by removing at least a DC component of the frequency components included in the first signal, a limiter configured to generate a third signal by adjusting the second signal, and an adder configured to generate an output image signal representing the output image by adding the third signal to the input image signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.