Image analysis – Histogram processing
Reexamination Certificate
2008-07-29
2008-07-29
Bali, Vikkram (Department: 2624)
Image analysis
Histogram processing
C382S286000, C382S291000, C348S094000, C348S135000
Reexamination Certificate
active
07406193
ABSTRACT:
An image processing method of making luminance correction on the basis of a luminance histogram showing luminance level distribution of image data expressing an image by a numerical value. A luminance average value, a luminance standard deviation, and a peak distance in the luminance histogram are obtained. A distribution discrimination value which can discriminate whether the luminance level distribution is deviated on the low/high luminance side in the histogram is compared with the peak distance. A halftone presence/absence discrimination value which can discriminate whether the luminance distribution is not deviated in the halftone in the luminance histogram is compared with the standard deviation. A backlight image is discriminated by the comparison results. An exposing state of an image other than a backlight image is discriminated by using an exposing state discrimination value. The proper luminance correction is made in accordance with the exposing state.
REFERENCES:
patent: 4929979 (1990-05-01), Kimoto et al.
patent: 5012333 (1991-04-01), Lee et al.
patent: 5123060 (1992-06-01), Cho et al.
patent: 5668890 (1997-09-01), Winkelman
patent: 5748773 (1998-05-01), Tashiro et al.
patent: 5748802 (1998-05-01), Winkelman
patent: 5874988 (1999-02-01), Gu
patent: 5995665 (1999-11-01), Maeda
patent: 6040860 (2000-03-01), Tamura et al.
patent: 6351558 (2002-02-01), Kuwata
patent: 6371373 (2002-04-01), Ma et al.
patent: 2002/0071041 (2002-06-01), Pine
patent: 2002/0136459 (2002-09-01), Imagawa et al.
patent: 2002/0183963 (2002-12-01), Kocimski
patent: 2003/0002736 (2003-01-01), Maruoka et al.
patent: 2003/0038984 (2003-02-01), Ohkawa
patent: 2003/0099407 (2003-05-01), Matsushima
patent: 2000-134467 (2000-05-01), None
patent: 2000134467 (2000-05-01), None
patent: 2001-243463 (2001-09-01), None
patent: 2002-092607 (2002-03-01), None
patent: 2002-247361 (2002-08-01), None
patent: 2002-288650 (2002-10-01), None
Bali Vikkram
Oki Data Corporation
Panitch Schwarze Belisario & Nadel LLP
Rashid David P
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