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Table 4 shows the results for the seven test sequences in terms of embedded capacity, modified macroblocks, modified motion vectors, PSNR Y difference, bit-rate, and the embedded cost.
Table 1 The embedded capacity of LUT and maximum embedding capacity.
On large block size, the embedded capacity is decreased and the number of extra bits also decreases.
In summary, G3 can be embedded more secret information, G2 is the second, and G1 is embedded less secret information, embedded capacity G3 > G2 > G1; H1 and H3 can be embedded more secret information, and H2 is embedded less secret information, embedded capacity H1 > H2 and H3 > H2.
Figure 9 shows the quality of watermarked images at various embedding capacities with block size of.
The embedding capacities for image Lena, Pepper, and Airplane are all about 25000 bits.
However, their exclusion decreases embedding capacity.
In addition, it maximizes the embedding capacity for these groups.
However, the maximum possible embedding capacity trades off the detectability.
Therefore, the embedding capacity is at best 0.5 bit/pixel.
(2) Embedding capacity and distortion: The positions are chosen by considering the embedding capacity and the distortion.
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