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:
Aug. 04, 2009
Filed:
Sep. 06, 2005
Nobuhiro Karito, Nagano-ken, JP;
Nobuhiro Karito, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An image processing apparatus comprises a pixel group reference point determination unitthat divides the input image data into predetermined pixel groups and determines a position of a reference point from the grayscale values of respective pixels contained in the pixel groups; a pixel group expansion processing unitthat takes grayscale values of the part that is less than a threshold value from unprocessed pixels in the periphery of the pixel group to the pixel group if the sum total of the grayscale values of the respective pixels contained in the pixel group is less than the threshold value; and a quantization data supply unitthat supplies the quantization data to a pixel on the basis of the position of the reference point determined by the pixel group reference point determination unit