Digital image acquisition device with built in dust and sensor mapping capability
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United States of America Patent
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Apr 20, 2010
Grant Date -
Aug 16, 2007
app pub date -
Feb 13, 2007
filing date -
Feb 14, 2006
priority date (Note) -
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Abstract
A digital image acquisition device has an image acquisition sensor, a shutter, an aperture and optical elements for focusing an image on the sensor. The device includes a light source located in the body of the device. The light source is periodically activated with one of the aperture or shutter closed, and the device derives a map of defects on the surface of the sensor from a calibration image acquired by the sensor when illuminated by the light source.
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