Method for hierarchical summarization and browsing of digital video
US5995095A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 1999 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/326
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of hierarchical digital video summarization and browsing includes inputting a digital video signal for a digital video sequence and generating a hierarchical summary based on keyframes of the video sequence. Additional steps may include computing histograms for the digital video sequence; detecting shot boundaries within the digital video sequence; determining the number of keyframes to be allocated within each shot; locating the actual position of each keyframe within each shot; identifying keyframe locations by the largest consecutive difference criteria; pruning keyframes for an shot without meaningful action; extracting keyframes efficiently in the case of compressed video; and browsing the shots using the hierarchical keyframe summary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.