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:
Jan. 13, 2009
Filed:
Feb. 06, 2003
Haike Guan, Tokyo, JP;
Tadashi Araki, Tokyo, JP;
Haike Guan, Tokyo, JP;
Tadashi Araki, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image correcting apparatus is provided for preventing a degraded image quality which can be caused by a three-dimensional distortion correction made to a scanned image distorted in a trapezoidal shape. Divergent distortion angles α, β of a scanned image are detected using a page contour of a book document which can be found near the upper or lower edge of the scanned image in a main scanning direction. The scanned image is corrected for a divergent distortion based on the divergent distortion angles α, β, followed by a correction of the scanned image for a shape distortion in a sub-scanning direction. In this way, the image quality can be prevented from degradation possibly caused by the three-dimensional distortion correction, if made to such a scanned image distorted in a trapezoidal shape.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile