Picture image processing method

Details Picture image processing method Picture image processing method

1997-05-19

1999-11-02

Couso, Jose L.

Facsimile and static presentation processing

Natural color facsimile

Color correction

H04N 140

Patent

active

059781068

ABSTRACT:
In a picture image processing method, a correction gradation conversion table is created in order to correct the color balance. Next, a basic negative gradation conversion table (NegaTable1) and the correction gradation conversion table are merged into a look-up table and a new gradation conversion table is created. A main scan is then performed. The method accomplishes negative-positive conversion so that the color balance is not destroyed.

REFERENCES:
patent: 4364084 (1982-12-01), Akimoto et al.
patent: 4792979 (1988-12-01), Nomura et al.
patent: 4899216 (1990-02-01), Tasumi et al.
patent: 5410418 (1995-04-01), Yonezawa

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