Image processing method and apparatus using local brightness gain to enhance image quality
US9189831B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2013 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Feb 4, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4092
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus is provided. The image processing apparatus includes a local brightness adjustment circuit and an image enhancement circuit. The local brightness adjustment circuit is arranged to obtain a local brightness gain relation between an input image before a local brightness adjustment and the input image after the local brightness adjustment. The image enhancement circuit is coupled to the local brightness adjustment circuit, and is arranged to perform at least one of a noise reduction and an edge enhancement upon an image to be processed according to the local brightness gain relation to generate an output image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.