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. 01, 2012
Filed:
Mar. 13, 2008
Xu-cheng Yin, Beijing, CN;
Jun Sun, Beijing, CN;
Katsuhito Fujimoto, Kawasaki, JP;
Hiroaki Takebe, Kawasaki, JP;
Koji Kurokawa, Kawasaki, JP;
Yusaku Fuji, Kawasaki, JP;
Satoshi Naoi, Kawasaki, JP;
Xu-Cheng Yin, Beijing, CN;
Jun Sun, Beijing, CN;
Katsuhito Fujimoto, Kawasaki, JP;
Hiroaki Takebe, Kawasaki, JP;
Koji Kurokawa, Kawasaki, JP;
Yusaku Fuji, Kawasaki, JP;
Satoshi Naoi, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
This invention provides a correcting device and a correcting method for perspective transformation of document images. The correcting device comprises a horizontal vanishing point determining unit, for detecting a horizontal vanishing point of the perspective transformed document image; a vertical vanishing point determining unit, for detecting a vertical vanishing point of the perspective transformed document image; and a perspective transformation correcting and converting unit, for correcting the perspective transformed document image; wherein the horizontal vanishing point determining unit comprises a direct horizontal line segment detecting unit, an indirect horizontal line segment detecting unit and a horizontal vanishing point detecting unit, and wherein the horizontal vanishing point detecting unit detects a horizontal vanishing point in accordance with a direct horizontal line segment detected by the direct horizontal line segment detecting unit and an indirect horizontal line segment detected by the indirect horizontal line segment detecting unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile