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Assume that the embedder calculates watermarked coordinates in the MCB plane, and it mixes the corresponding watermark signal in the wavelet subspace with the proportional embedding.
Figure 5a-e show the cover and corresponding watermark images as Set 1 to Set 5.
When a false negative error exists, a corresponding watermark sequence will be discarded.
All the elements with a timestamp (tau ) are immediately processed when an element with timestamp greater than (tau ) (and the corresponding watermark) is received, without waiting for out-of-order elements.
In the tree split process, assuming that if the region is segregated into n blocks, the formula (3) is applied to every block for obtaining the corresponding watermark bit information.
Construct a secret share block S x) by utilizing a codebook C as described in (3) and (4), feature type t, and a corresponding watermark pixel value w i, j).
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Figure 10 shows the original Classical1 audio signal waveform and the corresponding watermarked audio signal waveform.
In the embedding process, a differential technique is performed on two transformed sub-vectors so that the extraction of the watermark is achieved using only the difference of the corresponding watermarked sub-vectors.
Figures 8(a) and 8(b) provide the comparison between the original Lena test image and its corresponding watermarked image.The original watermark and the extracted watermark are also shown in Figures 8(c) and 8(d), respectively.
By comparing the means of these blocks between the odd and even descriptions at the corresponding position, the watermark sequence w is extracted.
At the decoder side, after the lost or tampered regions are identified, the original content is recovered by extracting the watermark corresponding to the affected areas.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com