Apparatus and method for context-based indexing and retrieval of image sequences
US6643387B1 · kind B1 · utility
115Cited by
13References
20Claims
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Key dates
| Filing date | Jan 24, 2000 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jan 24, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/49
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for implementing object motion segmentation and object trajectory segmentation for an image sequence. Specifically, block-based motion vectors for a pair of adjacent frames are used to derive optical flow, e.g., affine, motion parameters. Such optical flow motion parameters are employed to determine key objects where their motion and trajectory within a sequence of frames are calculated and stored. Such object motion information is used to improve or offer image processing functions such as context-based indexing of the input image sequence by using motion-based information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.