Image reading apparatus and image data processing method
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United States of America Patent
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Feb 10, 2015
Grant Date -
Dec 15, 2011
app pub date -
May 16, 2011
filing date -
Jun 14, 2010
priority date (Note) -
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Abstract
Correction of brightness of image data outputted by an image sensor which includes a light emitting portion, a photoelectric conversion portion in which a plurality of photoelectric transducers are arrayed in line, and a charge transfer portion. For a smear occurred at the charge transfer portion, reference smear amount data is stored, corresponding to each of color components of light from the light emitting portion and a correction target pixel. A correction amount for brightness is based on a difference between brightness values of a first color component and a second color component and the reference smear amount data.
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