Image processing apparatus and image processing method
US9734563B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2014 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Aug 29, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/208
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image is sharpened by using a frequency component exceeding a Nyquist frequency. In particular, an image processing apparatus 100 of the disclosure herein for generating an output image by sharpening an input image includes a first nonlinear processing unit 101 configured to generate a first signal by carrying out nonlinear processing on an input image signal representing the input image, a sharpening processing block 102 configured to generate a second signal containing a frequency component higher than a frequency component contained in the first signal by carrying out sharpening processing on the first signal, and an adder 103 configured to generate an output image signal representing the output image by adding the second signal to the input image signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.