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Proceedings Paper

Using intrinsically irreversible adaptive technologies to counteract the deceptions in digital watermarking
Author(s): Xianfeng Zhao; Weinong Wang; Kefei Chen
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Paper Abstract

To effectively counteract the deceptions in multimedia ownership verification, the reversibility in the widely used and researched adaptive watermarking is investigated from a new point of view. The reversibility, together with its resulting attacks, is introduced and extended to adaptive systems. The mostly typical existing counteraction is revised and its potential is pointed out. Then, the intrinsic irreversibility of some adaptive technologies is disclosed and evaluated. Under these technologies, attackers have great difficulty dividing a released version into their claimed original data and scaled watermarks, and in the meantime making the latter be the adaptive results based on the former. Their reversed solutions are violently perturbed and perceptually unacceptable. The condition number of the coefficient matrix of the reverse equations can be employed to assess the degree of the perturbation. The experiments that use the proper adaptive filter to enlarge the condition number force the attackers to solve the difficult problems in algebra and signal processing. Instead of using specialized security processing, such as hashing and randomization, they exploit the irreversible nature of chosen technologies so that a more feasible irreversible watermarking scheme is achieved.

Paper Details

Date Published: 31 July 2002
PDF: 8 pages
Proc. SPIE 4875, Second International Conference on Image and Graphics, (31 July 2002); doi: 10.1117/12.477136
Show Author Affiliations
Xianfeng Zhao, Shanghai Jiaotong Univ. (China)
Weinong Wang, Shanghai Jiaotong Univ. (China)
Kefei Chen, Shanghai Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 4875:
Second International Conference on Image and Graphics
Wei Sui, Editor(s)

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