发明名称 |
Method and system for generating focus signal |
摘要 |
An auto focus image system that includes an image sensor coupled to a controller. The image sensor captures an image that has at least one edge with a width. The controller generates a focus signal that is a function of the edge width. A lens receives the focus signal and adjust a focus. The edge width can be determined by various techniques including the use of gradients. A histogram of edge widths can be used to determine whether a particular image is focused or unfocused. A histogram with a large population of thin edge widths is indicative of a focused image. |
申请公布号 |
US8264591(B2) |
申请公布日期 |
2012.09.11 |
申请号 |
US20080082577 |
申请日期 |
2008.04.11 |
申请人 |
YEO YUNN-EN;TAY HIOK-NAM;CANDELA MICROSYSTEMS (S) PTE. LTD. |
发明人 |
YEO YUNN-EN;TAY HIOK-NAM |
分类号 |
G03B13/00;G06K9/40;H04N5/232 |
主分类号 |
G03B13/00 |
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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