发明名称 |
FOCUS ADJUSTMENT BASED ON INDICATOR OF RANDOMNESS OF PIXEL VALUES |
摘要 |
A circuit for auto-focus adjustment includes a calculating unit configured to calculate an indicator of randomness of pixel values in a captured image, a direction determining unit configured to compare a first value of the indicator calculated by the calculating unit in a preceding focus adjustment process with a second value of the indicator calculated by the calculating unit after the calculation of the first value, thereby to determine a direction of focus shift in response to a result of the comparison, and a control unit configured to start a focus adjustment process by which a focus position is first moved in the direction of focus shift determined by the direction determining unit.
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申请公布号 |
US2011122277(A1) |
申请公布日期 |
2011.05.26 |
申请号 |
US20100938994 |
申请日期 |
2010.11.03 |
申请人 |
FUJITSU SEMICONDUCTOR LIMITED |
发明人 |
ETO SATOSHI;IGARASHI SENSHU |
分类号 |
H04N5/232;G06K9/00;H04N5/228 |
主分类号 |
H04N5/232 |
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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