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:
May. 28, 2013
Filed:
Feb. 03, 2009
Hiroshi Kajiwara, Inagi, JP;
Hiroshi Kajiwara, Inagi, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
This invention provides an apparatus which re-encodes encoded image data to generate encoded data at a higher compression ratio while suppressing any increase in the load of re-encoding. A decoder decodes each block stored in a storage, stores the decoding result in a buffer, and stores, in a holding unit, block information representing the location of the encoded data of each block in the storage. A discrimination unit discriminates a text area in the decoded image data. The image in the text area undergoes binarization and then character image data encoding. A fill-up unit replaces the value of a character/line art pixel in the text area with the average of non-character/line art pixel values. A re-encoder encodes the blocks after replacement. Inside the text area, a selector selects and outputs encoded data generated by the re-encoder. Outside the text area, the selector selects and outputs encoded data in the storage.