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:
Aug. 16, 2011
Filed:
Sep. 27, 2006
Koichi Magai, Tokyo, JP;
Hiroshi Ito, Tokyo, JP;
Ryousuke Fujii, Tokyo, JP;
Mitsuyoshi Suzuki, Tokyo, JP;
Kohtaro Asai, Tokyo, JP;
Tokumichi Murakami, Tokyo, JP;
Koichi Magai, Tokyo, JP;
Hiroshi Ito, Tokyo, JP;
Ryousuke Fujii, Tokyo, JP;
Mitsuyoshi Suzuki, Tokyo, JP;
Kohtaro Asai, Tokyo, JP;
Tokumichi Murakami, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A digital watermark detecting device includes an extracting unit to extract pixels embedded as a digital watermark from an input image and to output an extracted pixel value row, a generating unit to generate a set of orthogonal patterns, a detecting unit to calculate a correlation using an integration result of the orthogonal patterns and the extracted pixel value row, to determine detected values corresponding to the orthogonal patterns and a standard deviation for detected values excluding a maximum detected value with a maximum absolute value from the calculated detected values, to calculate a quotient by dividing the maximum detected value by the standard deviation, a discriminating unit to output information corresponding to the result of comparison between a threshold parameter and the quotient, and a unit to convert the detected value inputted from the detecting unit into predetermined information, when the reliability of the detected values satisfies a standard.