Detecting objects by digital imaging device
US7154531B2 · kind B2 · utility
28Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 24, 2002 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Jul 12, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/255
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for detecting objects includes a digital image device such as CCD camera to control a defined area for unauthorized intrusions. The digital imaging device views a predetermined pattern positioned across the defined area from the device. A processor periodically compares an image stored in the memory with a digital representation of the predetermined pattern, and a signal is sent to a control unit when the correlation is missing as a result of the object entering field of vision of the digital imaging device and obscuring said predetermined pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.