Scene change detection
US8345750B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 2009 |
| Grant date | Jan 1, 2013 |
| Priority date | — |
| Expiry date | Jun 25, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/87
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Scene change detection in encoding digital pictures is disclosed. A statistical quantity μM is calculated for a given section in a current picture. A window of one or more sections is defined around a co-located section in a previous picture. A statistical sum E is calculated over the sections in the window. A difference between the statistical sum E and the statistical quantity μM is calculated. The difference between E and μM is used to determine whether the given section is a scene-change section. Whether the current picture is a scene-change picture may be determined from the number of scene change sections. Information indicating whether or not the current picture is a scene-change picture may be stored or transferred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.