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:
Nov. 15, 2005
Filed:
Sep. 21, 2001
Takashi Nakanishi, Hyogo-ken, JP;
Kazuyuki Murata, Kyoto-fu, JP;
Hideyuki Kuwano, Osaka-fu, JP;
Naoki Takahashi, Kyoto-fu, JP;
Takashi Nakanishi, Hyogo-ken, JP;
Kazuyuki Murata, Kyoto-fu, JP;
Hideyuki Kuwano, Osaka-fu, JP;
Naoki Takahashi, Kyoto-fu, JP;
Matsushita Electric Industrial Co., Ltd., Osaka-Fu, JP;
Abstract
An apparatus for image processing which determines such attributes as screen halftone area, character area and continuous tone area that appear in image data. A wavelet transform circuit wavelet transforms values of picture elements within a reference block selected from an image. Absolute value calculation circuits and adders calculate characteristic values representing characteristics of said reference block for every spatial frequency band on the basis of results of wavelet transform. And a determination circuit determines an attribute of notice area made up of one or a plurality of picture elements within the reference block on the basis of the characteristic values of the reference block.