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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
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Cet article décrit un nouvel encodeur HEVC (High Efficiency Video Coding) en temps réel 4K 120 ips (images par seconde) pour l'encodage et la transmission vidéo à haute fréquence d'images. Des problèmes de représentation du mouvement, tels que le flou de mouvement et les saccades, peuvent survenir dans les scènes vidéo contenant des objets en mouvement rapide ou un panoramique rapide de la caméra. Une fréquence d'images élevée résout ces problèmes et offre une expérience visuelle plus immersive qui peut exprimer même les scènes rapides sans inconfort. Il peut également être utilisé en commande à distance pour les scènes à fort mouvement, telles que les systèmes VAR (Video Assistant Referee) dans le sport. Un codage en temps réel de vidéos à fréquence d'images élevée avec une faible latence et une évolutivité temporelle est nécessaire pour fournir de tels services vidéo à fréquence d'images élevée. L'encodeur proposé permet un encodage complet en temps réel 4K/120 ips, soit le double de la fréquence d'images actuelle du service 4K de 60 ips, grâce à une configuration multipuce avec deux encodeurs LSI. L'échange de données d'image de référence à proximité d'une limite de tranche divisée spatialement fournit une estimation de mouvement entre puces et maintient l'efficacité de codage. Le codeur prend en charge le mode de codage évolutif dans le temps, dans lequel il produit un flux avec évolutivité temporelle transmis sur un ou deux chemins de transmission. L'encodeur prend également en charge l'autre mode, le mode de codage à faible retard, dans lequel il atteint un traitement à faible latence de 21.8 ms grâce à une restriction de vecteur de mouvement. L'évaluation de la configuration multipuce du codeur proposée montre que le débit binaire BD (le taux moyen d'augmentation du débit binaire), comparé à une simple division de tranche sans transfert entre puces, est de -2.86 % au minimum et de -2.41 % en moyenne dans le codage évolutif dans le temps. mode. Le système d'encodage proposé ouvrira la porte à la prochaine génération de services UHDTV (télévision ultra haute définition) à fréquence d'images élevée.
Yuya OMORI
NTT Corporation
Ken NAKAMURA
NTT Corporation
Takayuki ONISHI
NTT Corporation
Daisuke KOBAYASHI
NTT Corporation
Tatsuya OSAWA
NTT Corporation
Hiroe IWASAKI
NTT Electronics Corporation
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Yuya OMORI, Ken NAKAMURA, Takayuki ONISHI, Daisuke KOBAYASHI, Tatsuya OSAWA, Hiroe IWASAKI, "4K 120fps HEVC Encoder with Multi-Chip Configuration" in IEICE TRANSACTIONS on Communications,
vol. E104-B, no. 7, pp. 749-759, July 2021, doi: 10.1587/transcom.2020CQP0004.
Abstract: This paper describes a novel 4K 120fps (frames per second) real-time HEVC (High Efficiency Video Coding) encoder for high-frame-rate video encoding and transmission. Motion portrayal problems such as motion blur and jerkiness may occur in video scenes containing fast-moving objects or quick camera panning. A high-frame-rate solves such problems and provides a more immersive viewing experience that can express even the fast-moving scenes without discomfort. It can also be used in remote operation for scenes with high motion, such as VAR (Video Assistant Referee) systems in sports. Real-time encoding of high-frame-rate videos with low latency and temporal scalability is required for providing such high-frame-rate video services. The proposed encoder achieves full 4K/120fps real-time encoding, which is twice the current 4K service frame rate of 60fps, by multichip configuration with two encoder LSI. Exchange of reference picture data near a spatially divided slice boundary provides cross-chip motion estimation, and maintains the coding efficiency. The encoder supports temporal-scalable coding mode, in which it output stream with temporal scalability transmitted over one or two transmission paths. The encoder also supports the other mode, low-delay coding mode, in which it achieves 21.8msec low-latency processing through motion vector restriction. Evaluation of the proposed encoder's multichip configuration shows that the BD-bitrate (the average rate of bitrate increase), compared to simple slice division without inter-chip transfer, is -2.86% at minimum and -2.41% on average in temporal-scalable coding mode. The proposed encoder system will open the door to the next generation of high-frame-rate UHDTV (ultra-high-definition television) services.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2020CQP0004/_p
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@ARTICLE{e104-b_7_749,
author={Yuya OMORI, Ken NAKAMURA, Takayuki ONISHI, Daisuke KOBAYASHI, Tatsuya OSAWA, Hiroe IWASAKI, },
journal={IEICE TRANSACTIONS on Communications},
title={4K 120fps HEVC Encoder with Multi-Chip Configuration},
year={2021},
volume={E104-B},
number={7},
pages={749-759},
abstract={This paper describes a novel 4K 120fps (frames per second) real-time HEVC (High Efficiency Video Coding) encoder for high-frame-rate video encoding and transmission. Motion portrayal problems such as motion blur and jerkiness may occur in video scenes containing fast-moving objects or quick camera panning. A high-frame-rate solves such problems and provides a more immersive viewing experience that can express even the fast-moving scenes without discomfort. It can also be used in remote operation for scenes with high motion, such as VAR (Video Assistant Referee) systems in sports. Real-time encoding of high-frame-rate videos with low latency and temporal scalability is required for providing such high-frame-rate video services. The proposed encoder achieves full 4K/120fps real-time encoding, which is twice the current 4K service frame rate of 60fps, by multichip configuration with two encoder LSI. Exchange of reference picture data near a spatially divided slice boundary provides cross-chip motion estimation, and maintains the coding efficiency. The encoder supports temporal-scalable coding mode, in which it output stream with temporal scalability transmitted over one or two transmission paths. The encoder also supports the other mode, low-delay coding mode, in which it achieves 21.8msec low-latency processing through motion vector restriction. Evaluation of the proposed encoder's multichip configuration shows that the BD-bitrate (the average rate of bitrate increase), compared to simple slice division without inter-chip transfer, is -2.86% at minimum and -2.41% on average in temporal-scalable coding mode. The proposed encoder system will open the door to the next generation of high-frame-rate UHDTV (ultra-high-definition television) services.},
keywords={},
doi={10.1587/transcom.2020CQP0004},
ISSN={1745-1345},
month={July},}
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TY - JOUR
TI - 4K 120fps HEVC Encoder with Multi-Chip Configuration
T2 - IEICE TRANSACTIONS on Communications
SP - 749
EP - 759
AU - Yuya OMORI
AU - Ken NAKAMURA
AU - Takayuki ONISHI
AU - Daisuke KOBAYASHI
AU - Tatsuya OSAWA
AU - Hiroe IWASAKI
PY - 2021
DO - 10.1587/transcom.2020CQP0004
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E104-B
IS - 7
JA - IEICE TRANSACTIONS on Communications
Y1 - July 2021
AB - This paper describes a novel 4K 120fps (frames per second) real-time HEVC (High Efficiency Video Coding) encoder for high-frame-rate video encoding and transmission. Motion portrayal problems such as motion blur and jerkiness may occur in video scenes containing fast-moving objects or quick camera panning. A high-frame-rate solves such problems and provides a more immersive viewing experience that can express even the fast-moving scenes without discomfort. It can also be used in remote operation for scenes with high motion, such as VAR (Video Assistant Referee) systems in sports. Real-time encoding of high-frame-rate videos with low latency and temporal scalability is required for providing such high-frame-rate video services. The proposed encoder achieves full 4K/120fps real-time encoding, which is twice the current 4K service frame rate of 60fps, by multichip configuration with two encoder LSI. Exchange of reference picture data near a spatially divided slice boundary provides cross-chip motion estimation, and maintains the coding efficiency. The encoder supports temporal-scalable coding mode, in which it output stream with temporal scalability transmitted over one or two transmission paths. The encoder also supports the other mode, low-delay coding mode, in which it achieves 21.8msec low-latency processing through motion vector restriction. Evaluation of the proposed encoder's multichip configuration shows that the BD-bitrate (the average rate of bitrate increase), compared to simple slice division without inter-chip transfer, is -2.86% at minimum and -2.41% on average in temporal-scalable coding mode. The proposed encoder system will open the door to the next generation of high-frame-rate UHDTV (ultra-high-definition television) services.
ER -