Maintaining image quality in motion picture watermarking based on motion detection (Japanese)

In: Transactions of the Information Processing Society of Japan   ;  43 ,  8  ;  2529-2541  ;  2002
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Compatibility between maintenance of image quality and robustness of image processing is an essential requirement for watermark embedding. Therefore, it is necessary to embed watermarks into the contents as much as possible without visual degradation. Because watermarking is inconspicuous on moving objects among frames, there is the possibility of increasing watermark strength by considering the properties of the motion. Previous methods, however, embedded watermarks into each frame independently. This paper proposes a method that controls watermark strength based on motion vectors and variations in the motion detection. Experimental evaluations show that the new method enables us to raise the embedded information as much as 30% with the same quality as the previous method and improve the survivability of MPEG2 encoding.

Table of contents – Volume 43, Issue 8

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Digital security token and its derivatives
Matsuura, K. | 2002
Biometric personal authentication using DNA data
Itakura, Y. / Nagashima, T. / Tsujii, S. | 2002
Consideration on combinatorial optimization of illegal copy countermeasures
Sasaki, R. / Yoshiura, H. / Itoh, S. | 2002
Virus extermination method using vaccine with chase ability
Nakaya, N. / Koui, Y. / Suzuki, M. | 2002
Maintaining image quality in motion picture watermarking based on motion detection
Echizen, I. / Yoshiura, H. / Taguchi, J. / Nakano, K. / Sasaki, R. | 2002
Implementation and evaluation of remote patrol system for Web server
Takemori, K. / Tanaka, T. / Nakao, K. / Ohigashi, T. / Miyake, T. / Shiraishi, Y. / Morii, M. | 2002
Secure Tele-operation Protocol for the firewall in the control system
Kato, H. / Tamano, M. / Furuya, M. / Miyao, T. | 2002
A privacy-enhanced SSL access control with authorization certificates
Umesawa, K. / Saito, T. / Okuno, H.G. | 2002
Implementation and evaluation of certificate management mechanism for HTTPS
Wakayama, K. / Takasu, T. / Murase, S. / Suzuki, S. / Iwata, A. | 2002
Object-oriented framework development method based on a three-view model
Hayase, T. / Matsumoto, K. | 2002
Numerical simulation of dialysate flow in a hollow-fiber dialyzer
Osuga, T. / Ikehira, H. / Obata, T. / Homma, K. / Yamane, S. / Naito, H. | 2002
A QoS-control method on video distribution by means of RTP
Shimotsuma, Y. / Fukuda, K. / Okumura, S. / Takatori, N. / Ohno, T. / Mizuno, T. | 2002
A synthesis of structural adaptive learning algorithm in neural network based on the theory of evolution
Oeda, S. / Ichimura, T. / Terauchi, M. / Takahama, T. / Isomichi, Y. | 2002
A study of learning support system for integrative study
Obayashi, F. / Yamamoto, A. / Ito, K. / Shimoda, H. / Yoshikawa, H. | 2002
Representation of volumetric data with immersive image and haptics
Hashimoto, W. / Iwata, H. | 2002
"e-office", a communication support system for distributed workers using media space
Sakakibara, K. / Kato, M. / Tadokoro, Y. / Miyasaki, T. | 2002