Image processing apparatus and image processing method

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

2008-01-01

2008-01-01

Tran, Douglas Q. (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S001900

Reexamination Certificate

active

10958581

ABSTRACT:
An image processing apparatus having a simple structure capable of forming high quality images. The image processing apparatus includes a document reader for generating a first luminance signal for each pixel in a color multi-valued image; a factor multiplication part for multiplying the first luminance signal by a factor to obtain a second luminance signal; a pixel-attribute determination part for determining the color attribute of a noticed pixel based on the second luminance signal; and a main controller. The main controller is configured to count an array attribute determined by an array of the color attributes for 32 lines in a block obtained by dividing a band including 64 lines in the color multi-valued image into eight in the main scanning direction, calculate image-characteristic parameters for the block based on the counted values, determine a block image attribute from the counted values and the calculated parameters, and determine the image attribute of the band based on the determination result.

REFERENCES:
patent: 6798902 (2004-09-01), McIntyre et al.
patent: 7106341 (2006-09-01), Abe
patent: 2004/0001230 (2004-01-01), Kagawa
patent: 2002-190546 (2002-07-01), None
patent: 2004-034327 (2004-02-01), None

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