Contour enhancement unit and method to enhance the contours of an image
US8144254B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 5, 2009 |
| Grant date | Mar 27, 2012 |
| Priority date | — |
| Expiry date | Nov 12, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20192
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image enhancement unit and method for enhancing the image quality of a video stream is presented. The image enhancement unit combines a contour enhancement unit, a luminance contrast stretching unit, a color transient improvement unit, and a color saturation control unit to enhance both the luminance and chrominance values in the video stream. Specifically, the contour enhancement unit processes the luminance values to improve the contours of the images in the video steam. The luminance contrast stretching unit further improves the luminance by enhancing the contrast in the images. The color transient improvement unit processes the chrominance values to remove blurring around along the edges of color transitions and the color saturation control unit increases the color saturation to improve the appearance of the images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.