Object-based parsing and indexing of compressed video streams
US6389168B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1998 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Oct 13, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for object-based video retrieval and indexing include a configuration detection processor for deriving quantitative attribute information for video frames in a compressed video stream. The quantitative attribute information includes object data for a video frame, including the number of objects and their orientation within the video frame and the size, shape, texture, and motion of each object. A configuration comparison processor compares object data from first and second frames to determine differences between first frame video objects and second frame video objects. The configuration comparison processor has a shot boundary detection mode in which it cooperates with a shot boundary detector to identify shot boundaries within a video sequence. In a key frame selection mode, the configuration comparison processor cooperates with a key frame selector to select key frames from the video sequence. A key instance selector communicates with the configuration comparison processor during a key instance selection mode to select key instances of video objects based on differences between first and second instances of video objects. The configuration comparison processor…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.