MASTER THESIS Video Watermarking - Computer Graphics Group ...

In order to increase robustness against direct removal attack, the
watermark should be embedded into textured areas only. Textured areas provide
more non-zero coefficients in the residual than uniform areas do, thus the
watermark may be hidden more safely. Moreover, less distortion would be
produced.
Therefore, an adaptive embedding algorithm which would adjust the weight
factor per macroblock according to its complexity and spatial characteristics
should be implemented.
Furthermore, the distortion in inter predicted slices caused by prediction
from watermarked intra slices should be compensated. Among others, complete
inter prediction has to be implemented in order to accomplish this task.
As soon as the inter prediction error compensation is implemented, there is
only a small step left to implementation of the embedding process into inter coded
slices as well.
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