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17 February 2006 A framework for the design of good watermark identification codes
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The fundamental difference between the data-hiding and watermark signature verification problems was highlighted in a 2001 paper by Steinberg and Merhav. In data hiding, the maximum number of messages that can be reliably decoded is essentially 2nC, where n is the host sequence length and C is the data-hiding capacity. A dramatically different result is obtained for signature verification: in principle one can discriminate between a doubly exponential number of signatures: 22nC', where C' is the identification capacity. This paper proposes a practical design of codes for the latter application and compares the results with current designs in the literature.
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Pierre Moulin and Ralf Koetter "A framework for the design of good watermark identification codes", Proc. SPIE 6072, Security, Steganography, and Watermarking of Multimedia Contents VIII, 60721H (17 February 2006);

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