Focusing method for image-capturing device
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United States of America Patent
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Issued Date -
Oct 5, 2006
app pub date -
Apr 5, 2005
filing date -
Apr 5, 2005
priority date (Note) -
Abandoned
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Abstract
A focusing method for an image-capturing device with a focus is disclosed. The focusing method first determines a maximal contrast value and a corresponding first position of the focus by a focus procedure, and determines a second position of the focus by a calibration procedure. Next, the focusing method compares the first and second positions to generate an adjustment number of steps, and then positions the focus according to the adjustment number. By applying this method, the focus error problem of the image-capturing device can be improved, thereby upgrading the resolution and performance of the image-capturing device.
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