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. 10, 2013
Filed:
Oct. 20, 2009
Takeshi Aoyagi, Tokyo, JP;
Takeshi Aoyagi, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image processing device and an image processing method provided herein are capable of achieving data compression with reduced image degradation even if the data is image data entered from an input device such as a scanner. The entered original image data is divided into 2×2 pixel blocks. Two-color-form compression processing and four-color holding compression processing are performed on a block-by-block basis. The compression result data which leads to a smaller one of the differences in gradation value between the original image data and the two-color-form compression difference data and between the original image data and the four-color compression difference data is output as the compression processing result of the block.