The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 01, 2008
Filed:
Oct. 05, 2004
Hidetsugu Kagawa, Kanagawa, JP;
Tatsuo Kimura, Kanagawa, JP;
Hidetsugu Kagawa, Kanagawa, JP;
Tatsuo Kimura, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
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.