发明名称 |
Method for detecting repetitive surfaces in an optical mouse |
摘要 |
A repetitive surface detector includes an image capture device capturing an image. An autocorrelator receives the image and generates a signal indicative of a repetitive background of the image. A controller determines a maximum and minimum value in the auto-correlated signal. An adder determines the signed difference between the maximum and minimum value. A comparator compares the signed difference with a threshold and generates an output that indicates when the image includes a repetitive background.
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申请公布号 |
US7263242(B2) |
申请公布日期 |
2007.08.28 |
申请号 |
US20030350722 |
申请日期 |
2003.01.23 |
申请人 |
AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD. |
发明人 |
KAKARALA RAMAKRISHNA;BROSNAN MICHAEL JOHN |
分类号 |
G06K9/64;G06F3/03;G06T7/40;H04N1/00 |
主分类号 |
G06K9/64 |
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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