Blind digital watermarking for cartoon and map images

Po Chyi Su, C. C.Jay Kuo, Houng Jyh Mike Wang

研究成果: 雜誌貢獻會議論文同行評審

28 引文 斯高帕斯(Scopus)

摘要

Cartoon/map images are synthetic graphics without complicated color and texture variation, which makes the embedding of invisible and robust digital watermarks difficult. In this research, we propose a wavelet-based, threshold-adaptive watermarking scheme (TAWS) which can embed invisible robust watermarks into various kinds of graphical images. TAWS selects significant subbands and inserts watermarks in selected significant coefficients. The inserted watermarks are adaptively scaled by different threshold values to maintain the perceptual integrity of watermarked images and achieve robustness against compression and signal processing attacks. Another major contribution of this work is that the cast watermark is retrieved without the knowledge of the original image. The so-called blind watermark retrieval technique is very useful in managing a large cartoon, trademark and digital map databases. Finally, a company logo that clearly identifies the copyright information can be embedded in cartoon and map images without serious perceptual loss. Experimental results are given to demonstrate the superior performance of TAWS.

原文???core.languages.en_GB???
頁(從 - 到)296-306
頁數11
期刊Proceedings of SPIE - The International Society for Optical Engineering
3657
出版狀態已出版 - 1 1月 1999
事件Proceedings of the 1999 Security and Watermarking of Multimedia Contents - San Jose, CA, USA
持續時間: 25 1月 199927 1月 1999

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