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A practical design of digital video watermarking in H.264/AVC for content authentication / Po-Chyi Su in Signal processing. Image communication, Vol. 26 N° 8-9 (Octobre 2011) 

Public ISBD [article]  in Signal processing. Image communication > Vol. 26 N° 8-9 (Octobre 2011) . - pp. 413–426 Titre : A practical design of digital video watermarking in H.264/AVC for content authentication Type de document : texte imprimé Auteurs : Po-Chyi Su, Auteur ; Chin-Song Wu, Auteur ; Ing-Fan Chen, Auteur Année de publication : 2012 Article en page(s) : pp. 413–426 Note générale : Electronique Langues : Anglais (eng) Mots-clés : Digital  watermark  Video  authentication  H.264/AVC  Synchronization  Perceptual  hash Résumé : In this research, we propose a practical digital video watermarking scheme mainly used for authenticating the H.264/AVC compressed videos to ensure their correct content order. The watermark signals, which represent the serial numbers of video segments, are embedded into nonzero quantization indices of frames to achieve both the effectiveness of watermarking and the compact data size. The human visual characteristics are taken into account to guarantee the imperceptibility of watermark signals and to attain an efficient implementation in H.264/AVC. The issues of synchronized watermark detections are settled by selecting the shot-change frames for calculating the distortion-resilient hash, which helps to determine the watermark sequence. The experimental results demonstrate the feasibility of the proposed scheme as the embedded watermarks can survive the allowed transcoding processes while the edited segments in the tampered video can be located. ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science/article/pii/S0923596511000889 [article] A practical design of digital video watermarking in H.264/AVC for content authentication [texte imprimé] / Po-Chyi Su, Auteur ; Chin-Song Wu, Auteur ; Ing-Fan Chen, Auteur . - 2012 . - pp. 413–426. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 26 N° 8-9 (Octobre 2011) . - pp. 413–426 Mots-clés : Digital  watermark  Video  authentication  H.264/AVC  Synchronization  Perceptual  hash Résumé : In this research, we propose a practical digital video watermarking scheme mainly used for authenticating the H.264/AVC compressed videos to ensure their correct content order. The watermark signals, which represent the serial numbers of video segments, are embedded into nonzero quantization indices of frames to achieve both the effectiveness of watermarking and the compact data size. The human visual characteristics are taken into account to guarantee the imperceptibility of watermark signals and to attain an efficient implementation in H.264/AVC. The issues of synchronized watermark detections are settled by selecting the shot-change frames for calculating the distortion-resilient hash, which helps to determine the watermark sequence. The experimental results demonstrate the feasibility of the proposed scheme as the embedded watermarks can survive the allowed transcoding processes while the edited segments in the tampered video can be located. ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science/article/pii/S0923596511000889