Object movement estimator using one-dimensional optical flow
US5598488A · kind A · utility
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2References
6Claims
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Key dates
| Filing date | Sep 13, 1993 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Sep 13, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An object movement estimator (400) predicts optical flow by estimating changes in sensed images using one-dimensional correlations. Sensed image portions are stored at a first instant of time and compared with sensed image portions at a second instant of time. An optimal flow is estimated by performing a one-dimensional correlation of the sensed image portions at the first and second instants of time, and a time-to-contact is estimated based on the predicted optical flow thus obtained.
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