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Reversible data hiding has emerged in recent years, and it has the fundamental requirement of reversibility. For reversible data hiding, secret information is embedded into original image with devised algorithms, and the marked image should be delivered to the decoder without any damage. For decoding, both the embedded secret and original image should be recovered perfectly. With these characteristics,...
Electrical network frequency (ENF) is known to be useful for audio authentication. In a digital archive system, error concealment of the audio files are sometimes required. Firstly, assuming that traditional recordings were produced by AC-powered devices, the ENF is coupled into the recorded signals. Secondly, assuming that damaging and editing produce similar data error patterns, the ENF phase discontinuities...
Digital watermarking, in conjunction with cryptography, is one of the two major categories for information security. Unlike cryptography that the encrypted information represents like noisy patterns, by using watermarking, the watermarked contents look almost identical to its original counterpart, while it still retains the capability to counteract intentional signal processing by others and keeps...
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