发明名称 |
Image processing |
摘要 |
An image recognition process (15) applied to a photograph is preceded by a pre-processing step which identifies parts of the image which are in focus. The recognition process is then limited to those parts. The pre-processing typically operates by creating (10-12) a measure of high spatial frequency activity and applying a threshold to them (13, 14).
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申请公布号 |
US2003053693(A1) |
申请公布日期 |
2003.03.20 |
申请号 |
US20020221557 |
申请日期 |
2002.09.13 |
申请人 |
CHATTING DAVID J;MORRISON DAVID G |
发明人 |
CHATTING DAVID J;MORRISON DAVID G |
分类号 |
G06T1/00;G06T5/00;G06T7/40;(IPC1-7):G06K9/00;G06K9/34 |
主分类号 |
G06T1/00 |
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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