The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
La dissimulation des erreurs est un élément essentiel des systèmes de communication vidéo fiables, car les erreurs de transmission sont inévitables même lorsque le flux binaire codé est hautement protégé. Le problème de la CE temporelle peut être divisé en deux parties concernant les vecteurs de mouvement (MV) candidats utilisés et le critère de correspondance pour évaluer l'adéquation de chaque MV candidat. Afin d'obtenir des résultats EC plus fidèles, cet article propose un nouvel algorithme EC itératif, dans lequel un moyen efficace de fournir des MV candidats et une nouvelle mesure de fitness sont présentés. L'approche proposée pour les MV candidats utilise systématiquement tous les MV voisins disponibles en exploitant une corrélation spatio-temporelle bien connue des MV de blocs. Aussi, afin de supprimer la dépendance de la qualité de dissimulation d'un bloc endommagé sur les blocs adjacents déjà cachés, nous développons un nouveau critère de correspondance. L'objectif de la mesure de fitness proposée est de minimiser les erreurs totales de correspondance des limites induites par l'ensemble des blocs corrompus. Les simulations réalisées à l'aide d'un codec H.263 démontrent une amélioration significative des qualités vidéo cachées subjectives et objectives, en particulier lorsque la zone corrompue est plus large qu'une seule rangée de blocs de codage.
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Yong-Goo KIM, Yoonsik CHOE, "An Iterative Temporal Error Concealment Algorithm for Degraded Video Signals" in IEICE TRANSACTIONS on Communications,
vol. E84-B, no. 4, pp. 941-951, April 2001, doi: .
Abstract: Error concealment is an essential part of reliable video communication systems because transmission errors are inevitable even when the coded bitstream is highly protected. The problem of temporal EC can be factored into two parts regarding candidate motion vectors (MVs) employed and the matching criterion to evaluate the fitness of each candidate MV. In order to obtain more faithful EC results, this paper proposes a novel iterative EC algorithm, in which an efficient way to provide candidate MVs and a new fitness measure are presented. The proposed approach for candidate MVs systematically utilizes all the available neighboring MVs by exploiting a well-known spatiotemporal correlation of block MVs. Also, in order to remove the dependency of a damaged block's quality of concealment on the already concealed adjacent blocks, we develope a new matching criterion. The objective of the proposed fitness measure is to minimize the total boundary matching errors induced by the whole corrupted blocks. Simulations performed using an H.263 codec demonstrate a significant improvement on the subjective and objective concealed video qualities, especially when the corrupted area is wider than a single row of coding blocks.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e84-b_4_941/_p
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@ARTICLE{e84-b_4_941,
author={Yong-Goo KIM, Yoonsik CHOE, },
journal={IEICE TRANSACTIONS on Communications},
title={An Iterative Temporal Error Concealment Algorithm for Degraded Video Signals},
year={2001},
volume={E84-B},
number={4},
pages={941-951},
abstract={Error concealment is an essential part of reliable video communication systems because transmission errors are inevitable even when the coded bitstream is highly protected. The problem of temporal EC can be factored into two parts regarding candidate motion vectors (MVs) employed and the matching criterion to evaluate the fitness of each candidate MV. In order to obtain more faithful EC results, this paper proposes a novel iterative EC algorithm, in which an efficient way to provide candidate MVs and a new fitness measure are presented. The proposed approach for candidate MVs systematically utilizes all the available neighboring MVs by exploiting a well-known spatiotemporal correlation of block MVs. Also, in order to remove the dependency of a damaged block's quality of concealment on the already concealed adjacent blocks, we develope a new matching criterion. The objective of the proposed fitness measure is to minimize the total boundary matching errors induced by the whole corrupted blocks. Simulations performed using an H.263 codec demonstrate a significant improvement on the subjective and objective concealed video qualities, especially when the corrupted area is wider than a single row of coding blocks.},
keywords={},
doi={},
ISSN={},
month={April},}
Copier
TY - JOUR
TI - An Iterative Temporal Error Concealment Algorithm for Degraded Video Signals
T2 - IEICE TRANSACTIONS on Communications
SP - 941
EP - 951
AU - Yong-Goo KIM
AU - Yoonsik CHOE
PY - 2001
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E84-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2001
AB - Error concealment is an essential part of reliable video communication systems because transmission errors are inevitable even when the coded bitstream is highly protected. The problem of temporal EC can be factored into two parts regarding candidate motion vectors (MVs) employed and the matching criterion to evaluate the fitness of each candidate MV. In order to obtain more faithful EC results, this paper proposes a novel iterative EC algorithm, in which an efficient way to provide candidate MVs and a new fitness measure are presented. The proposed approach for candidate MVs systematically utilizes all the available neighboring MVs by exploiting a well-known spatiotemporal correlation of block MVs. Also, in order to remove the dependency of a damaged block's quality of concealment on the already concealed adjacent blocks, we develope a new matching criterion. The objective of the proposed fitness measure is to minimize the total boundary matching errors induced by the whole corrupted blocks. Simulations performed using an H.263 codec demonstrate a significant improvement on the subjective and objective concealed video qualities, especially when the corrupted area is wider than a single row of coding blocks.
ER -