发明名称 |
TECHNIQUES FOR COLLECTION OF AUTO-FOCUS STATISTICS |
摘要 |
Various techniques are disclosed for collecting and processing auto-focus statistics data in an image signal processor (ISP). In one embodiment, a statistics collection engine in an ISP front-end processing unit may be configured to collect coarse (based on decimated raw data) and fine auto-focus statistics. Coarse auto-focus statistics may be collected on decimated Bayer RGB data and/or on linear camera luma values. Fine auto-focus statistics may be collected on raw Bayer RGB using a combination of a horizontal filter and edge detector, or may be collected on BayerY data (by applying a 3×1 transform to the raw Bayer RGB data). Edge sums may be accumulated using the filter outputs to determine auto-focus statistics.
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申请公布号 |
US2012050566(A1) |
申请公布日期 |
2012.03.01 |
申请号 |
US20100873989 |
申请日期 |
2010.09.01 |
申请人 |
COTE GUY;FREDERIKSEN JEFFREY E.;APPLE INC. |
发明人 |
COTE GUY;FREDERIKSEN JEFFREY E. |
分类号 |
H04N9/73 |
主分类号 |
H04N9/73 |
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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