Image processing apparatus and gradation reproduction method

Details Image processing apparatus and gradation reproduction method Image processing apparatus and gradation reproduction method

2006-03-27

2009-10-20

Tieu, Benny Q (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Color correction

C358S001900, C358S519000, C358S520000, C382S162000

Reexamination Certificate

active

07605960

ABSTRACT:
The purpose of this invention is to reproduce gradations of dark parts between devices with different ranges of reproducible brightness. The range of reproducible brightness by the printer is a range from Lblackto 100, and this is narrow in relation to the range of brightness that is able to be reproduced by the digital camera (0 to 100). An image processing apparatus converts the input brightness Linputon the input brightness graph Linput-graph to the output brightness Loutputon the output brightness graph Loutput-graph. Accordingly, the low brightness gradations 0 to Lblackof the input brightness Linputin relation to the input RGB values included in the range R1 become Lblackto L1, the dark area gradations are reproduced.

REFERENCES:
patent: 6151136 (2000-11-01), Takemoto
patent: 7167597 (2007-01-01), Matsushima
patent: 2001/0007599 (2001-07-01), Iguchi et al.
patent: 2002/0031256 (2002-03-01), Hiramatsu et al.
patent: 2003/0002095 (2003-01-01), Gruzdev et al.
patent: 6-90382 (1994-03-01), None
patent: 07-327141 (1995-12-01), None
patent: 9-135360 (1997-05-01), None
patent: 10-248024 (1998-09-01), None
patent: 2001-186368 (2001-07-01), None
patent: 2001-189862 (2001-07-01), None
patent: 2002-359748 (2002-12-01), None
patent: 2003-8920 (2003-01-01), None
patent: 2003-143420 (2003-05-01), None

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