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. 06, 2009
Filed:
Nov. 30, 2004
Yukiharu Horiuchi, Chino, JP;
Michael Mannion, Toronto, CA;
Yukiharu Horiuchi, Chino, JP;
Michael Mannion, Toronto, CA;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A color reduction processing apparatus and method reduce an original image containing many colors to a printable image containing few colors according to human color sensation. A conversion processing unit converts the pixel data for each pixel in an RGB color image (original image) to HLS data. A color reduction processor then generates print image data (the reduced-color image) reduced to a first color, second color, and a non-printing color by calculating the hue H, lightness L, and saturation S values of the HLS data based on specific parameters. These parameters can be set from an operating screen presented on a display. The original image and reduced-color image are presented on the display for verification by the user.