Title:
2次元画像読取装置の感度調整装置及びその感度調整方法
Document Type and Number:
Japanese Patent JP4081641
Kind Code:
B2
Abstract:
A photosensor system performs a sensitivity-adjusting reading operation with respect to a subject image, while simultaneously changing the image reading sensitivity stepwise for each of rows of a photosensor array or for specific rows thereof. The dynamic ranges of the lightness data on the read subject image are checked to see how they are distributed in relation to the image reading sensitivities. On the basis of this distribution, an image reading sensitivity that contributes to an optimal image reading state is extracted as an optimal image reading sensitivity.
Inventors:
Nakamura Zensuke
Application Number:
JP2001198615A
Publication Date:
April 30, 2008
Filing Date:
June 29, 2001
Export Citation:
Assignee:
CASIO COMPUTER CO.,LTD.
International Classes:
H01L27/146; H04N1/028; H01L29/786; H04N5/235; H04N5/335; H04N5/353; H04N5/369
Domestic Patent References:
| JP2001136340A | ||||
| JP2001136441A | ||||
| JP2001145023A |
Attorney, Agent or Firm:
Hidemi Kashima