Method and apparatus for detecting salient motion using optical flow
US6303920A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1999 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Nov 4, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for detecting salient motion in an image sequence using optical flow. For each pixel in an image, frame-to-frame optical flow information are collected over time for computing a rough estimate of the total image distance traveled by each pixel. Specifically, an optical flow field is generated for every two successive image frames. The resulting optical flow field is applied to warp one or more intermediate measure images that contain intermediate cumulative measurements. The warped measure images for an image sequence are used to compute a sum of frame-to-frame optical flow fields for the image sequence to yield a cumulative flow field that can be used to generate a measure of salience for each image point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.