Method of enhancing images extracted from video
US7760805B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 31, 2005 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | May 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and devices for enhancing still digital images extracted from a compressed video sequences are disclosed herein, wherein the compressed video sequence comprises at least one I-frame and at least one P-frame. The method comprises determining whether an I-frame or a P-frame of video has been extracted, determining the quantization matrix of the previous I-frame if a P-frame has been extracted, and reconstructing the extracted video frame. The image is enhanced based on the quantization matrix of the present I-frame if the extracted frame is an I-frame and based on the quantization matrix of the previous I-frame if a P-frame has been extracted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.