Detecting objects by a digital imaging device

Details Detecting objects by a digital imaging device Detecting objects by a digital imaging device

G - Physics

01

N

G01N 21/84 (2006.01) G01V 8/10 (2006.01) G06K 9/32 (2006.01) G08B 13/194 (2006.01) G08B 13/196 (2006.01) H04N 7/18 (2006.01)

Patent

CA 2409670

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.

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