The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON SIGNAL PROCESSING
Transactions ID Number: 28-333
Full Name: Chamidu Atupelage
Position: Student
Age: ON
Sex: Male
Address: 101, 1-9-16, SAIJO CHUO, Higashi Hiroshima, Hiroshima
Country: JAPAN
Tel: +819041082006
Tel prefix:
Fax:
E-mail address: atupelage@hiroshima-u.ac.jp
Other E-mails: chamidu07@yahoo.com
Title of the Paper: Perceptible Content Retrieval in DCT Domain and Semi-Fragile Watermarking Technique for Perceptible Content Authentication
Authors as they appear in the Paper: Chamidu Atupelage, Koichi Harada
Email addresses of all the authors: atupelage@hiroshima-u.ac.jp, harada@mis.hiroshima-u.ac.jp
Number of paper pages: 10
Abstract: Digital watermarking was commenced to copyright protection and ownership verification of multimedia data. However the evolution of the watermark focused on different security aspects of multimedia data such as integrity and authenticity. Fragile and semi-fragile watermarking schemes were introduced to accomplish these requirements. In this paper, we propose semi-fragile watermarking scheme to authenticate visual content of the image. The proposed method occupies in DCT domain of the particular image. Low frequency components are considered as a visual content and authenticate particular number of low frequency components instead all coefficients. In this proposed scheme the watermark is the digital signature of the visual content. Authenticating the selected number of coefficient the proposed scheme reduces the computational complexity and cost. Digital signature is generated following the elliptic curve digital signature algorithm (ECDSA). Thus, the scheme is fast!
er than RSA based authentication definition and it provides high level of security and availability. Additionally our scheme localizes the compromised area of the image. Experimental results shows watermark does not make any visual artifact on original data, however the degradation of compression ratio due to alternation in quantization table, is evaluated. Results give evidence that compression ratio degradation is ignorable for average quality factors.
Keywords: semi-fragile watermarking, public key cryptography, discrete cosine transformation, image authentication, imperceptibility, elliptic curve digital signature algorithm, JPEG.
EXTENSION of the file: .doc
Special (Invited) Session: Semi-Fragile Watermark for Visual Content Authentication
Organizer of the Session: 594-438
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