Full text of article: Russian language.

Abstract:
In paper an extraction method for textural watermarks of raster cell variation type is proposed. The method assumes usage of nonlinear filtering for preparation of source images. Researches show its stability to distortions of input data made by scanning of samples of polygraphic production. Results of applying the algorithm to real samples and efficiency metrics are shown.

Key words: texture watermarks, digital steganography.

References:

1. Dubina, N.N. Polygraphic protecion methods / N.N. Dubina // CompuArt. – 2002. – №1. – P. 73-102. – (In Russian).
2. Mitekin, V.A. Construction of steganographic system and generalised digital watermarking algorithm for polygraphic production, A.V. Sergeyev, V.A. Fedoseev, D.M. Bogomolov // Computer Optics. – 2007. – Vol. 31, № 4. – P. 95-100. – (In Russian).
3. Gribunin, V.G. Digital steganography / V.G. Gribunin, I.N. Okov, I.V. Turintsev. – Moscow.: SOLON-Press, 2002. – 262 p. – (In Russian).
4. Fedoseev, V.A. Method of extraction of digital watermarks based on texture scale variation / V.A. Fedoseev, V.A. Mitekin // Proceedings of Russian conference “OI-2009”. Ulyanovsk, 2009. – P. 322-330. – (In Russian).
5. Glumov, N.I. Hidden information extraction algorithm for scanned polygraphic production / N.I. Glumov, V.A. Mitekin, A.V. Sergeyev, V.A. Fedoseev // SSAU Papers. –2008. – № 2 (15). – P. 216-220. – (In Russian).
6. Aleshin, A.A. Software for scanned polygraphic products steganalysis / A.A. Aleshin, D.M. Bogomolov, N.I. Glumov, V.A. Mitekin, A.V. Sergeyev, V.A. Fedoseev // Proceedings of International Conference PRIA-2009, October 15-19, 2008, Nizhni Novgorod. –2008. – Vol.1. – P. 3-6.
7. Lau, D.L. Modern digital halftoning / D.L. Lau, G.R. Arce // Signal processing and communications. – 2001. –Vol. 8. – P. 3-33.
8. Waite, J.J. Viewing Distance as a Variable in Discerning Grayscale Halftone Dots at Varying Screen Frequencies / J.J. Waite, G.R. Oliver // Journal of Industrial Technology Postings . – 2006. – Vol. 22, № 2. – P. 1-9.
9. Protected document bearing watermark and method of masking.– US Patent 4,210,346.
10. Hsiao, P.C. Watermarking a Printed Binary Image with Varied Screen Rulings / P.C. Hsiao, Y.T. Chen, H.C. Wang // 16th IPPR Conference on Computer Vision, Graphics and Image Processing, proceedings. – 2003. – P. 290-297.
11. Gonzalez, R.C. Digital Image Processing (Second edition) / R.C. Gonzalez, R.E. Woods. – Prentice Hall. – 2002. – 793 p.
12. Methods of Computer Image Processing / Edited by V.A. Soifer. – Moscow, Fizmatlit, 2001. – 784 p.

---

© 2009, ИСОИ РАН
Россия, 443001, Самара, ул. Молодогвардейская, 151; электронная почта: ko@smr.ru ; тел: +7 (846 2) 332-56-22, факс: +7 (846 2) 332-56-20