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:
Dec. 31, 2007
Filed:
Apr. 08, 2001
Hiroshi Kajiwara, Inagi, JP;
Hiroshi Kajiwara, Inagi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
There is provided an imageencodeencodingapparatus which comprises a generation means for generating a prediction error from anencodeencodingtarget pixel value and a prediction value of theencodeencodingtarget pixel value, a judgment means for generating a generation frequency distribution of the prediction error to judge whether or not the generation frequency distribution is discrete and an entropyencodeencodingmeans for changingencodeencodingdata corresponding to the prediction error and performing entropy encoding on the obtainedencodeencodingdata, in accordance with a judged result by the judgment means. Therefore, the encoding can be effectively performed even on suchtheimage data having the discrete pixel value as in a CG image, a limited-color image or the like.