Automatic multiscale image acquisition from a steerable camera
US7796154B2 · kind B2 · utility
53Cited by
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1Claims
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Key dates
| Filing date | Mar 7, 2005 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Dec 17, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for automatically acquiring high-resolution images by steering a pan-tilt-zoom camera at targets detected in a fixed camera view is provided. The system uses automatic or manual calibration between multiple cameras. Using automatic calibration, the homography between the cameras in a home position is estimated together with the effects of pan and tilt controls and the expected height of a person in the image. These calibrations are chained together to steer a slave camera. The manual calibration scheme steers a camera to the desired region of interest and calculates the pan, tile and zoom parameters accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.