Haar-wavelet-based just noticeable distortion model for transparent watermark

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題名:	Haar-wavelet-based just noticeable distortion model for transparent watermark
作者:	陳竹一;Shieh, Yaw-Shih;Hsin, Hsi-Chin;Chen, Jwu-E.;Ko, Lu-Ting;Sung, Tze-Yun
貢獻者:	資訊電機學院電機工程學系
日期:	2012-01-01
上傳時間:	2026-04-23 14:10:01 (UTC+8)
出版者:	Hindawi Publishing Corporation;Cairo, Egypt: Hindawi Limiteds
摘要:	摘要： Watermark transparency is required mainly for copyright protection. Based on the characteristics of human visual system, the just noticeable distortion (JND) can be used to verify the transparency requirement. More specifically, any watermarks whose intensities are less than the JND values of an image can be added without degrading the visual quality. It takes extensive experimentations for an appropriate JND model. Motivated by the texture masking effect and the spatial masking effect, which are key factors of JND, Chou and Li (1995) proposed the well-known full-band JND model for the transparent watermark applications. In this paper, we propose a novel JND model based on discrete wavelet transform. Experimental results show that the performance of the proposed JND model is comparable to that of the full-band JND model. However, it has the advantage of saving a lot of computation time; the speed is about 6 times faster than that of the full-band JND model. 出版者： Cairo, Egypt: Hindawi Limiteds 出版日期： 2012-01-01 出處： Mathematical Problems in Engineering, 2012-01, Vol.2012 (2012), p.299-312-420 資源來源：華藝CEPS中文電子期刊服務版權： Copyright © 2012 Lu-Ting Ko et al. 識別號： ISSN: 1024-123X 識別號： ISSN: 1026-7077 識別號： ISSN: 1563-5147 識別號： EISSN: 1563-5147 識別號： DOI: 10.1155/2012/635738
顯示於類別:	[電機工程學系] 期刊論文

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