@InProceedings{FreitaRigoFariAraś:2012:ErCoUs,
author = "Freita, Pedro Garcia and Rigoni, Ronaldo and Farias, Mylene C. Q.
and Ara{\'u}jo, Alet{\'e}ia P. F. de",
affiliation = "{University of Bras \́lia (UnB) } and {University of Bras
\́lia (UnB) } and {University of Bras \́lia (UnB) }
and {University of Bras \́lia (UnB)}",
title = "Error Concealment Using a Halftone Watermarking Technique",
booktitle = "Proceedings...",
year = "2012",
editor = "Freitas, Carla Maria Dal Sasso and Sarkar, Sudeep and Scopigno,
Roberto and Silva, Luciano",
organization = "Conference on Graphics, Patterns and Images, 25. (SIBGRAPI)",
publisher = "IEEE Computer Society",
address = "Los Alamitos",
keywords = "Error concealment, H.264, QIM, watermarking, halftoning.",
abstract = "In this paper, we propose an error concealment technique for H.264
coded videos. The algorithm is targeted at compressed videos
degraded after packet losses caused by transmission over an
unreliable channel. We use a combination of watermarking and
halftoning (dithering) techniques. At the encoder side, a dithered
version of each video frame is em- bedded into the video using a
watermarking technique. The watermarking technique used by the
proposed algorithm is a modified version of the Quantization Index
Modulation (QIM) algorithm, which provides a good data hiding
capacity. At the decoder side, the algorithm identifies which
packets of the video were lost, extracts the corresponding mark,
and applies an inverse halftoning technique to estimate the
original content. The algorithm is fast and has a good
performance, being able to restore content with a better quality
than the default H.264 error concealment algorithm.",
conference-location = "Ouro Preto, MG, Brazil",
conference-year = "22-25 Aug. 2012",
doi = "10.1109/SIBGRAPI.2012.50",
url = "http://dx.doi.org/10.1109/SIBGRAPI.2012.50",
language = "en",
ibi = "8JMKD3MGPBW34M/3C8LNT8",
url = "http://urlib.net/ibi/8JMKD3MGPBW34M/3C8LNT8",
targetfile = "102153.pdf",
urlaccessdate = "2024, Apr. 29"
}