Title:
【発明の名称】画像及びビデオの認証システム
Document Type and Number:
Japanese Patent JP2003512779
Kind Code:
A
Abstract:
An image authentication system utilizes a coded version of a digital image signature and embeds that information into a transform representation of the image. A digital image signature preferably is extracted from the image data. That signature is coded so that the signature is not immediately recognizable. The coded information is embedded into high frequency coefficients in a transform representation of the image. The contents of the high frequency coefficients of a received or later accessed signal can then be deciphered and compared to the signature determined directly from the image to authenticate the integrity of the signal.
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Inventors:
Abdel-Mottareb Mohamed
Application Number:
JP2001531295A
Publication Date:
April 02, 2003
Filing Date:
October 04, 2000
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
G06T1/00; G09C5/00; H04L9/32; H04N1/32; H04N1/387; H04N7/08; H04N7/081; (IPC1-7): H04N1/387; G06T1/00; G09C5/00; H04L9/32; H04N7/08; H04N7/081
Attorney, Agent or Firm:
Susumu Tsugaru (1 person outside)