发明名称 |
Method and apparatus for motion detection in auto-focus applications |
摘要 |
A method (300) and image capture device (100) are provided for determining whether an image incident upon an image sensor (101) is sufficiently stable prior to executing an auto-focus process. An image stability mechanism (104) compares attribute data—such as luminance or frequency spectrum—from successive images to determine whether a change between the attribute data from image to image is within a predetermined range (710). The image stability mechanism (104) can also be configured to determine whether a scene incident upon the image sensor (101) has changed. Where the image is sufficiently stable, an indicator module (107) provides an image stability indication to a control circuit (102). The control circuit (102) can then be configured to execute the auto-focus operation when the image is sufficiently stable, or when both the scene has changed and the image is sufficiently stable. |
申请公布号 |
US8274596(B2) |
申请公布日期 |
2012.09.25 |
申请号 |
US20080112196 |
申请日期 |
2008.04.30 |
申请人 |
PINCENTI JOHN;PETRESCU DOINA;MOTOROLA MOBILITY LLC |
发明人 |
PINCENTI JOHN;PETRESCU DOINA |
分类号 |
H04N5/228 |
主分类号 |
H04N5/228 |
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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