CAVLC codewords substitution for H.264/AVC video data hiding

This paper addresses the problem of hiding secret message in the bitstream of H.264/AVC compressed videos. Challenges behind the bitstream data-hiding problem are twofold: one is to maintain the drift error caused by the hiding process as minimum as possible, and the other is to keep the bit-rate un...

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Vydáno v:Proceedings of IEEE International Symposium on Consumer Electronics s. 492 - 493
Hlavní autoři: Yih-Chuan Lin, I-Fong Hsu
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.01.2014
Témata:
context-adaptive variable-length coding (CAVLC)
Decoding
Degradation
Encoding
H.264/AVC
Optical distortion
PSNR
Video coding
video data-hiding
ISSN:2158-3994
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Abstract This paper addresses the problem of hiding secret message in the bitstream of H.264/AVC compressed videos. Challenges behind the bitstream data-hiding problem are twofold: one is to maintain the drift error caused by the hiding process as minimum as possible, and the other is to keep the bit-rate unaffected after hiding the secret message. In the paper, a new codeword substitution approach is developed that employs the level-suffix codewords as the hiding domain to accommodate the secret message in the compressed bitstream. The proposed method guarantees the bit-rate of marked bitstream to be intact and makes the resultant drift error controllable by choosing suitable levelsuffix codewords for hiding data. Experimental results have shown that the proposed level-suffix codeword substitution approach exhibits good performance in terms of both hiding capacity and reconstructed visual quality.
AbstractList This paper addresses the problem of hiding secret message in the bitstream of H.264/AVC compressed videos. Challenges behind the bitstream data-hiding problem are twofold: one is to maintain the drift error caused by the hiding process as minimum as possible, and the other is to keep the bit-rate unaffected after hiding the secret message. In the paper, a new codeword substitution approach is developed that employs the level-suffix codewords as the hiding domain to accommodate the secret message in the compressed bitstream. The proposed method guarantees the bit-rate of marked bitstream to be intact and makes the resultant drift error controllable by choosing suitable levelsuffix codewords for hiding data. Experimental results have shown that the proposed level-suffix codeword substitution approach exhibits good performance in terms of both hiding capacity and reconstructed visual quality.
Author Yih-Chuan Lin
I-Fong Hsu
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  surname: I-Fong Hsu
  fullname: I-Fong Hsu
  organization: Dept. of Comput. Sci. & Inf. Eng., Nat. Formosa Univ., Yunlin, Taiwan
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Snippet This paper addresses the problem of hiding secret message in the bitstream of H.264/AVC compressed videos. Challenges behind the bitstream data-hiding problem...
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StartPage 492
SubjectTerms context-adaptive variable-length coding (CAVLC)
Decoding
Degradation
Encoding
H.264/AVC
Optical distortion
PSNR
Video coding
video data-hiding
Title CAVLC codewords substitution for H.264/AVC video data hiding
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