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. 06, 2014
Filed:
Oct. 28, 2010
Junichi Hayashi, Kamakura, JP;
Nobuhiro Tagashira, Nagareyama, JP;
Kazuya Kishi, Kawasaki, JP;
Yasuhiro Nakamoto, Kawasaki, JP;
Yoshiharu Imamoto, Tokyo, JP;
Jun Tamaru, Tokyo, JP;
Junichi Hayashi, Kamakura, JP;
Nobuhiro Tagashira, Nagareyama, JP;
Kazuya Kishi, Kawasaki, JP;
Yasuhiro Nakamoto, Kawasaki, JP;
Yoshiharu Imamoto, Tokyo, JP;
Jun Tamaru, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In verification of image data of a captured image as to whether it is original one, the verification is possible even for image data subjected to a peripheral illumination correction or an exposure correction. An order information calculation unit selects a pixel set including two or more pixels based on pixel values and information on an image space of image data of a captured image, and calculates an order of magnitude between pixels in the selected pixel set. A verification data producing unit generates verification data used in verification of whether the image data has not been tampered with, based on the calculated order of magnitude. An image output unit outputs the image data and the verification data.