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
Le codage conjoint source-canal (JSCC) est une méthode permettant d'attribuer conjointement le débit binaire de transmission total donné au codage source et au codage de canal afin de maximiser la qualité vidéo à l'extrémité de réception. Dans cet article, nous proposons un modèle pratique pour déterminer efficacement un débit de code quasi optimal pour JSCC dans les communications vidéo en temps réel. Les schémas de décision de débit de code classiques utilisant un modèle de distorsion de codage source analytique et un modèle de distorsion induite par canal sont généralement complexes et emploient généralement le processus de formation de paramètres de modèle qui implique une complexité de calcul et un coût de mise en œuvre potentiellement élevés. Pour éviter la procédure de modélisation complexe, nous introduisons un modèle de qualité vidéo très simple basé sur le débit binaire lisible qui est défini comme la quantité totale de bits par unité de temps qui n'est pas affectée par la perte de canal pendant la transmission, y compris les bits correctement récupérés par le décodeur de canal. Étant donné que la qualité vidéo à la réception est clairement proportionnelle au débit binaire lisible, nous pouvons facilement déterminer le débit de code quasi optimal en termes de qualité en trouvant le débit de code qui maximise le débit binaire lisible du côté de l'expéditeur. Le modèle de débit binaire jouable proposé est très simple car il ne nécessite pas la procédure de formation complexe pour obtenir les paramètres du modèle, qui est généralement requise dans la méthode conventionnelle de décision de débit de code. Des simulations montrent que le schéma de décision de débit de code proposé, basé sur le modèle de débit binaire jouable, peut déterminer efficacement le débit de code quasi optimal pour JSCC en termes de haute précision sur le débit de code optimal.
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Yo-Won JEONG, Kwang-Deok SEO, Kyu Ho PARK, "A Practical Code Rate Decision Scheme Based on Playable Bitrate Model for Error-Resilient Joint Source-Channel Coding" in IEICE TRANSACTIONS on Communications,
vol. E94-B, no. 3, pp. 676-685, March 2011, doi: 10.1587/transcom.E94.B.676.
Abstract: Joint source-channel coding (JSCC) is a method to jointly allocate the given total transmission bitrate to the source coding and channel coding to maximize the video quality at the receiving end. In this paper, we propose a practical model for efficiently determining a near-optimal code rate for JSCC in real-time video communications. The conventional code rate decision schemes using analytical source coding distortion model and channel-induced distortion model are usually complex, and typically employ the process of model parameter training which involves potentially high computational complexity and implementation cost. To avoid the complex modeling procedure, we introduce a very simple video quality model based on the playable bitrate which is defined as the total bit amount per unit time that is not affected by the channel loss during transmission including correctly recovered bits by the channel decoder. Because the video quality at the receiving end is clearly commensurate with the playable bitrate, we can easily determine the quality-oriented near-optimal code rate by finding the code rate that maximizes the playable bitrate at the sender side. The proposed playable bitrate model is very simple because it does not require the complex training procedure for obtaining model parameters, which is usually required in the conventional code rate decision method. It is shown by simulations that the proposed code rate decision scheme based on the playable bitrate model can efficiently determine the near-optimal code rate for JSCC in terms of high accuracy on the optimal code rate.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.676/_p
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@ARTICLE{e94-b_3_676,
author={Yo-Won JEONG, Kwang-Deok SEO, Kyu Ho PARK, },
journal={IEICE TRANSACTIONS on Communications},
title={A Practical Code Rate Decision Scheme Based on Playable Bitrate Model for Error-Resilient Joint Source-Channel Coding},
year={2011},
volume={E94-B},
number={3},
pages={676-685},
abstract={Joint source-channel coding (JSCC) is a method to jointly allocate the given total transmission bitrate to the source coding and channel coding to maximize the video quality at the receiving end. In this paper, we propose a practical model for efficiently determining a near-optimal code rate for JSCC in real-time video communications. The conventional code rate decision schemes using analytical source coding distortion model and channel-induced distortion model are usually complex, and typically employ the process of model parameter training which involves potentially high computational complexity and implementation cost. To avoid the complex modeling procedure, we introduce a very simple video quality model based on the playable bitrate which is defined as the total bit amount per unit time that is not affected by the channel loss during transmission including correctly recovered bits by the channel decoder. Because the video quality at the receiving end is clearly commensurate with the playable bitrate, we can easily determine the quality-oriented near-optimal code rate by finding the code rate that maximizes the playable bitrate at the sender side. The proposed playable bitrate model is very simple because it does not require the complex training procedure for obtaining model parameters, which is usually required in the conventional code rate decision method. It is shown by simulations that the proposed code rate decision scheme based on the playable bitrate model can efficiently determine the near-optimal code rate for JSCC in terms of high accuracy on the optimal code rate.},
keywords={},
doi={10.1587/transcom.E94.B.676},
ISSN={1745-1345},
month={March},}
Copier
TY - JOUR
TI - A Practical Code Rate Decision Scheme Based on Playable Bitrate Model for Error-Resilient Joint Source-Channel Coding
T2 - IEICE TRANSACTIONS on Communications
SP - 676
EP - 685
AU - Yo-Won JEONG
AU - Kwang-Deok SEO
AU - Kyu Ho PARK
PY - 2011
DO - 10.1587/transcom.E94.B.676
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2011
AB - Joint source-channel coding (JSCC) is a method to jointly allocate the given total transmission bitrate to the source coding and channel coding to maximize the video quality at the receiving end. In this paper, we propose a practical model for efficiently determining a near-optimal code rate for JSCC in real-time video communications. The conventional code rate decision schemes using analytical source coding distortion model and channel-induced distortion model are usually complex, and typically employ the process of model parameter training which involves potentially high computational complexity and implementation cost. To avoid the complex modeling procedure, we introduce a very simple video quality model based on the playable bitrate which is defined as the total bit amount per unit time that is not affected by the channel loss during transmission including correctly recovered bits by the channel decoder. Because the video quality at the receiving end is clearly commensurate with the playable bitrate, we can easily determine the quality-oriented near-optimal code rate by finding the code rate that maximizes the playable bitrate at the sender side. The proposed playable bitrate model is very simple because it does not require the complex training procedure for obtaining model parameters, which is usually required in the conventional code rate decision method. It is shown by simulations that the proposed code rate decision scheme based on the playable bitrate model can efficiently determine the near-optimal code rate for JSCC in terms of high accuracy on the optimal code rate.
ER -