Method and apparatus for generating a condensed version of a video sequence including desired affordances
US6560281B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1998 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Feb 24, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F18/28
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus analyzes and annotates a technical talk typically illustrated with overhead slides, wherein the slides are recorded in a video sequence. The video sequence is condensed and digested into key video frames adaptable for annotation to time and audio sequence. The system comprises a recorder for recording a technical talk as a sequential set of video image frames. A stabilizing processor segregates the video image frames into a plurality of associated subsets each corresponding to a distinct slide displayed at the talk and for median filtering of the subsets for generating a key frame representative of each of the subsets. A comparator compares the key frame with the associated subsets to identify differences between the key frame and the associates subset which comprise nuisances and affordances. A gesture recognizer locates, tracks and recognizes gestures occurring in the subset as gesture affordances and identifies a gesture video frame representative of the gesture affordance. An integrator compiles the key frames and gesture video frames as a digest of the video image frames which can also be annotated with the time and audio sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.