Image processing apparatus and image processing method

Details Image processing apparatus and image processing method Image processing apparatus and image processing method

2008-10-02

2011-11-08

Safaipour, Houshang (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Scanning

C358S520000, C358S462000, C358S521000

Reexamination Certificate

active

08054517

ABSTRACT:
An image processing method and apparatus includes a color space conversion unit arranged to convert pixel data scanned by a line sensor of each color component into first chromaticity data and second chromaticity data, and an achromatic color determining unit arranged to determine whether or not the pixel data is achromatic. The achromatic color determining unit includes a comparison unit arranged to compare an achromatic color determination area with the pixel data in a color space defined by orthogonal coordinates having each chromaticity data as a coordinate axis. The achromatic color determination area is an elongated area that includes a coordinate origin of the color space, that is set based on a coordinate position of a false color acquired by using a size and position of displacement of the scanning position of each color component generated in accordance with the scanning speed, and that extends in an opposite direction from the coordinate origin.

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Official Communication issued in corresponding Japanese Patent Application No. 2007-291532, mailed on Feb. 16, 2010.
Official Communication issued in corresponding Japanese Patent Application No. 2007-291532, mailed on Nov. 2, 2009.

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