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Proceedings Paper

Optimal watermarking rate allocation in variable bit-rate compression
Author(s): Jong-Tae Kim; Hae-Yeoun Lee; Heung-Kyu Lee; Byeong-Ho Choi
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Paper Abstract

As the usage of multimedia is increased, the requirement of management on digital rights is emerged. Several Digital Rights Management (DRM) systems are provided the solution of that requirement. The watermarking technology can be used to several DRM system, such as MPEG-21. Conventional watermarking techniques intend to make robust watermarking against attacks including compression. The watermark has information as well as the cover image. In order to code watermarked image, more bits are required compraing to unwatermarked image. The conventional watermarking researches does not consider this severely. We are interested in variable rate compression considering streamming services. In order to maximize the image quality and the watermark quailty in given bitrate, we should allocate the watermark rate properly. In this paper, we investigate the optimum watermark length considering variable quantization step size.

Paper Details

Date Published: 24 June 2005
PDF: 9 pages
Proc. SPIE 5960, Visual Communications and Image Processing 2005, 59604D (24 June 2005); doi: 10.1117/12.632711
Show Author Affiliations
Jong-Tae Kim, Korea Advanced Institute of Science and Technology (South Korea)
Hae-Yeoun Lee, Korea Advanced Institute of Science and Technology (South Korea)
Heung-Kyu Lee, Korea Advanced Institute of Science and Technology (South Korea)
Byeong-Ho Choi, Korea Electronics Technology Institute (South Korea)

Published in SPIE Proceedings Vol. 5960:
Visual Communications and Image Processing 2005
Shipeng Li; Fernando Pereira; Heung-Yeung Shum; Andrew G. Tescher, Editor(s)

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