Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
December 14, 2010
Patent Application Number
11699412
Date Filed
January 30, 2007
Patent Citations Received
Patent Primary Examiner
Patent abstract
An image forming apparatus causes an illuminating unit and an imaging unit to equally split a predetermined exposure time into a plurality of split exposure times, and acquire an image with illumination and an image without illumination in each of the split exposure time. A luminance difference image for a particular split exposure time is calculated by subtracting the image without illumination from the image with illumination of the exposure time. The luminance difference images of all the split exposure times are integrated.
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