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Exact(7)
a No watermark under replay attack.
In a collusion attack, an adversary obtains several copies of a watermarked image, each with a different (or same) watermark to obtain a close approximation of the watermarked image and thereby produces a copy with no watermark.
He focusses his account on Mesopotamia — roughly speaking, modern-day Iraq — because it is "the heartland of the first 'pristine' states in the world," the term "pristine" here meaning that these states bore no watermark from earlier settlements and were the first time any such social organizations had existed.
All three are written in Arabic, have no starch or polishing, and no watermark.
In this scenario, the attacker is likely to evade the detector, since no watermark is injected into the system.
If the C6 bit is 0, the watermark is extracted from the lowest position of bits; if the C6 bit is 1, there is no watermark in bit stream.
Similar(53)
As Farid had hoped, the computer was able to tell the difference on the basis of style alone in every case--no watermarks required.
A music player would play a song with no watermarks or two watermarks, while rejecting Internet-copied songs with only one watermark.
If it has no watermarks at all, the song could either be a home recording of the church choir or a Napster file.
If no watermarking has occurred at that point, then r x, y) = 1.
Because of various operations on digital signal, no watermarking scheme is robust perfectly.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com