MASTER THESIS Video Watermarking - Computer Graphics Group ...
MASTER THESIS Video Watermarking - Computer Graphics Group ...
MASTER THESIS Video Watermarking - Computer Graphics Group ...
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5.2 Uniqueness<br />
Uniqueness of the watermark means that the detector should return<br />
significantly higher probability in case of copy ID which has been embedded than<br />
in case of other copy IDs.<br />
In each iteration, the test tries 100 different copy IDs including the correct<br />
one – it is 10 for weight factor of 1, 30 for weight factor of 2 etc.<br />
The results are illustrated in the following charts. The horizontal axes<br />
represent the 100 different copy IDs and the vertical axes stand for the detector<br />
responses.<br />
Although probabilities achieve lower values when using noise method with<br />
low weight factors, this method gives the highest distance of the correct copy ID<br />
probability from the other values and the narrowest spread of the other values.<br />
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