发明名称 |
Detecting objects by digital imaging device |
摘要 |
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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申请公布号 |
US7154531(B2) |
申请公布日期 |
2006.12.26 |
申请号 |
US20020279350 |
申请日期 |
2002.10.24 |
申请人 |
THE CHAMBERLAIN GROUP, INC. |
发明人 |
LAIRD EDWARD T. |
分类号 |
H04N7/18;G01V8/10;G01V8/20;G06K9/32 |
主分类号 |
H04N7/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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