Improved video watermarking for MPEG encoders using motion analysis

被引：0

作者：

Echizen, Isao ^{[1
]}

Yoshiura, Hiroshi ^{[2
]}

Anzai, Kousuke ^{[1
]}

Taguchi, Jun'ichi ^{[1
]}

Nakano, Kazunori ^{[1
]}

Tezuka, Satoru ^{[1
]}

机构：

[1] Systems Development Laboratory, Hitachi, Ltd., Saiwa-ku, Kawasaki, 212-8567, 890, Kashimada

[2] Faculty of Electro-Communication, The Univ. of Electro-Communication, Chofu, 182-8585, 1-5-1, Chofugaoka

来源：

Kyokai Joho Imeji Zasshi/Journal of the Institute of Image Information and Television Engineers | 2004年 / 58卷 / 02期

关键词：

Block-matching techniques; MPEG encoders; Picture quality; Video watermarking;

D O I：

10.3169/itej.58.233

中图分类号：

学科分类号：

摘要：

Maintaining picture quality is an essential requirement for video watermarking, and this paper shows that watermarks are less perceptible when they are embedded where picture contents are moving. It also describes a new watermarking method that uses motion detection to preferentially allocate watermarks to macro-blocks containing motion. As well it presents the results of experimental evaluations which demonstrate that this method significantly reduces degradation in picture quality. Further it shows that, for the same picture quality after MPEG encoding and decoding, 30% more watermarks can be embedded than with the previous method. This new method would be most effective when implemented in MPEG encoders, which already have the necessary motion analysis functions; it can also be used in content-distribution systems.

引用

页码：233 / 242

页数：9

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