A review of watermarking principles and practices
نویسندگان
چکیده
A digital watermark embeds an imperceptible signal into data such as audio, video and images, for a variety of purposes, including captioning and copyright control. As watermarking is increasingly used for a wide variety ∗Portions of this paper appeared in the Proceedings of SPIE, Human Vision & Electronic Imaging II, V 3016, pp 92-99, February 1997. Portions are reprinted, with permission, from “Public watermarks and resistance to tampering”, I.J. Cox and J.-P. Linnartz, IEEE International Conference on Image Processing, CD-ROM Proc. c ©1997 IEEE and from “Some General Methods for Tampering with Watermarks”, I. J. Cox and J.-P. Linnartz, IEEE Trans. on Selected Areas of Communications, 16, 4, 587-593, c ©1998
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