Electronic Marking and Identification Techniques to Discourage Document Copying

Modern computer networks make it possible to distribute documents quickly and economically by electronic means rather than by conventional paper means. However, the widespread adoption of electronic distribution of copyrighted material is currently impeded by the ease of unauthorized copying and dissemination. In this paper we propose techniques that discourage unauthorized distribution by embedding each document with a unique codeword. Our encoding techniques are indiscernible by readers, yet enable us to identify the sanctioned recipient of a document by examination of a recovered document. We propose three coding methods, describe one in detail, and present experimental results showing that our identification techniques are highly reliable, even after documents have been photocopied. >

[1]  R. L. Fountain,et al.  The fingerprinted database , 1990, [1990] Proceedings. Sixth International Conference on Data Engineering.

[2]  Clifford A. Lynch,et al.  Information retrieval as a network application , 1990 .

[3]  John R. Garrett.  Text to screen revisited: copyright in the electronic age , 1991 .

[4]  Reva Basch,et al.  Books Online: Visions, Plans, and Perspectives for Electronic Text. , 1991 .

[5]  L. O'Gorman.  Image and document processing techniques for the RightPages electronic library system , 1992, Proceedings., 11th IAPR International Conference on Pattern Recognition. Vol.II. Conference B: Pattern Recognition Methodology and Systems.

[6]  Jerome H. Saltzer.  Technology, Networks, and the Library of the Year 2000 , 1992, 25th Anniversary of INRIA.

[7]  Lawrence O'Gorman,et al.  The RightPages image-based electronic library for alerting and browsing , 1992, Computer.

[8]  Stu Borman,et al.  Advances in Electronic Publishing Herald Changes for Scientists , 1993 .

[9]  Lawrence O'Gorman,et al.  The RightPages services: an image-based electronic library , 1993 .

[10]  Lawrence O'Gorman,et al.  The Document Spectrum for Page Layout Analysis , 1993, IEEE Trans. Pattern Anal. Mach. Intell..

[11]  Nicholas F. Maxemchuk,et al.  Electronic document distribution , 1994, AT&T Technical Journal.

[12]  Henning Schulzrinne,et al.  Copyright protection for electronic publishing over computer networks , 1995 .

[13]  Henry S. Baird,et al.  Document image defect models , 1995 .

[14]  Lawrence O'Gorman,et al.  Document Image Analysis , 1996 .