Image processing apparatus and computer-readable recording...

Details Image processing apparatus and computer-readable recording... Image processing apparatus and computer-readable recording...

2008-02-29

2011-10-04

Couso, Jose (Department: 2624)

Image analysis

Color image processing

Reexamination Certificate

active

08031934

ABSTRACT:
An image processer has an extractor to extract a character area from color image data. A color-difference-value acquirer acquires information about color-difference values in the character area. A color-saturation-value acquirer acquires information about color saturation in the character area. A color-difference-subrange storage stores pre-defined color-difference subranges. A chromatic-region determination section determines the character area as gray when color salutation values fail to satisfy a condition for a chromatic color, and determines the character area as a chromatic region when color saturation values in the character area satisfy the condition. A first color-difference-subrange assignment section assigns a stored color-difference subrange to the character area determined as the chromatic region based on information about color-difference values. A representative-color setup section sets color information about the character area determined as chromatic by using an average of the color-difference values in the color-difference subrange assigned to the character area.

REFERENCES:
patent: 6771813 (2004-08-01), Katsuyama
patent: 6891641 (2005-05-01), Kouzaki
patent: 7127115 (2006-10-01), Osawa et al.
patent: 2002-77633 (2002-03-01), None

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