| http://www.w3.org/ns/prov#value | - One method of forming a watermark is to produce a noise-like random pattern using the extracted message and combine the original content and the generated pattern under the condition that no change in the original document can be readily perceived by the HVS. An example of such a technique is disclosed by Cox, I J, Killan, J, Leighton, T and Shamoon, T, Secure Spread Spectrum Watermarking for Mult
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