Abstract
Since digital right management of digital media data has received considerable attention recently, protection of halftone image documents becomes another important topic. Image-based visual cryptography is found to provide an alternative for applications of copyright protection by overlapping more than one secret embedded image to show the hidden information. In this paper, we propose a novel screening halftoning-based visual cryptography method for halftone image protection. Compared with the existing methods, the major contributions of our method contain (i) improved quality of the halftone images and extracted secrets; (ii) unlimited database size of protected halftone images; (iii) more than two halftone images can be overlapped to show the hidden secret; (iv) only one conjugate screen pair in our method is able to achieve the maximum clarity of extracted secrets in random screening. Experimental results and comparisons with a state of the art method demonstrate the effectiveness of our method.
This research was supported by the National Science Council NDAP-R & DTD-Digital Archives System Related Technology Research & Development Project: NSC 95-2422-H-001-008 and 94-2422-H-003-007.
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References
Barten, P.J.: Physical model for the contrast sensitivity of the human eye. In: Proc. IS&T/SPIE Int. Symp. on Electronic Imaging Science and Technology, San Jose, CA, February 9-14, vol. 1666, pp. 57–74 (1992)
Cox, I.J., Miller, M.L., Bloom, J.A.: Digital Watermarking. Morgan Kaufmann, San Francisco (2002)
Fu, M.S., Au, O.C.: Hiding data in halftone image using modified data hiding error diffusion. In: Proc. SPIE Conf. Visual Communication and Image Processing, vol. 4067, pp. 1671–1680 (2000)
Fu, M.S., Au, O.C.: Data hiding in halftone images by stochastic error diffusion. In: Proc. ICASSP, vol. 3, pp. 1965–1968 (2001)
Fu, M.S., Au, O.C.: Data hiding watermarking for halftone images. IEEE Trans. on Image Processing 11, 477–484 (2002)
Fu, M.S., Au, O.C.: A novel self-conjugate halftone image watermarking technique. In: Proc. of IEEE Int. Symposium on Circuits and Systems, vol. 3, pp. 790–793 (2003)
Knox, K.T.: Digital watermarking using stochastic screen patterns, U.S. Patent 5 734 752 (September 1996)
Knuth, D.E.: Digital halftones by dot diffusion. ACM Trans. On Graphics 6(4), 245–273 (1987)
Lau, D.L., Arce, G.R.: Modern digital halftoning. Marcel Dekker, New York (2001)
Naor, M., Shamir, A.: Visual cryptography. In: De Santis, A. (ed.) EUROCRYPT 1994. LNCS, vol. 950, pp. 1–12. Springer, Heidelberg (1995)
Pei, S.C., Guo, J.M.: Hybrid pixel-based data hiding and block-based watermarking for error-diffused halftone images. IEEE Trans. on Circuits and Systems for Video Technology 13, 867–884 (2003)
Wong, P.W., Memon, N.D.: Image processing for halftones. IEEE Signal Processing Magazine 20, 59–70 (2003)
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Hsu, CY., Lu, CS., Pei, SC. (2006). Joint Screening Halftoning and Visual Cryptography for Image Protection. In: Shi, Y.Q., Jeon, B. (eds) Digital Watermarking. IWDW 2006. Lecture Notes in Computer Science, vol 4283. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11922841_18
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DOI: https://doi.org/10.1007/11922841_18
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-48825-5
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