Hevc/H.265 Codec System And Transmission Experiments Aimed At 8K Broadcasting

Sugito, Yasuko; Iguchi, Kazuhisa; Ichigaya, Atsuro; Chida, Kazuhiro; Sakaida, Shinichi; Sakate, Hiroharu; Matsuda, Yoshihisa; Kawahata, Y.; Motoyama, Nobuaki

doi:10.1049/ibc.2015.0051

Cited by 15 publications

(6 citation statements)

References 2 publications

(2 reference statements)

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“…Five wide-range bit rates of 64, 85, 110, 165, and 240 Mbps were set for the 8K 120-Hz videos. These bit rates are the minimum bit rate setting of the encoder, bit rate for 8K 60-Hz videos in an 8K satellite transmission experiment [12], maximum bit rate for 8K 60-Hz videos defined by the 8K broadcasting guideline (ARIB TR-B39 ver.2.5), upper bit rate for 8K 120-Hz videos in the 8K broadcasting standard [10], and bit rate for a high-quality transmission intended for public viewing [9], respectively. The 8K 120-Hz encoder outputs two streams, an 8K 60-Hz video stream and a differential stream between 8K 120-and 60-Hz videos, and automatically allocates bit amounts for them keeping the total amount to be equal to the bit rate setting.…”

Section: Video Encodingmentioning

confidence: 99%

A comparison of non-experts and experts using DSIS method

Sugito¹,

Kusakabe²

2022

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Subjective evaluations are necessary to learn how expected viewers perceive the quality of a system. Traditionally, non-expert subjective tests are preferred rather than expert tests. In this study, we conducted subjective evaluation experiments for nonexperts and experts on compressed 8K videos using the double stimulus impairment scale (DSIS) method and analyzed the experimental results expressed in terms of the mean opinion score (MOS), which is the average of individual scores. Furthermore, we investigated the differences between non-experts and experts by considering a new method in P.913 that estimates an improved MOS and a new experimental method using experts, called expert viewing protocol (EVP). Our contribution shows advantages of conducting expert subjective tests, such as EVP: expert tests allow to perform experiments with fewer subjects, to distinguish between original and distorted images, to determine a lower threshold for the image quality, to distribute scores in an appropriate range, and to constantly gain MOS values equal to improved MOS values.

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Section: Video Encodingmentioning

confidence: 99%

A comparison of non-experts and experts using DSIS method

Sugito¹,

Kusakabe²

2022

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“…For instance, the studies conducted in [3,4] have shown that the bit-rate required by HEVC for 8K applications in 60Hz and 120Hz (temporally scalable) is around 80Mbps. In practice, HEVC codecs have been used for satellite broadcasting in Japan, where HEVC codec for 8K 120Hz has been developed [4,18]. For satellite transmission with DVB-S2X, bandwidth in the range 70-80Mb/s can be reached with the use of a complete transponder or multiple bonded transponders.…”

Section: Simulcastmentioning

confidence: 99%

Versatile Video Coding and Super-Resolution for Efficient Delivery of 8k Video with 4k Backward-Compatibility

Bonnineau

Hamidouche

Travers

et al. 2020

ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

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In this paper, we propose, through an objective study, to compare and evaluate the performance of different coding approaches allowing the delivery of an 8K video signal with 4K backwardcompatibility on broadcast networks. Presented approaches include simulcast of 8K and 4K single-layer signals encoded using High-Efficiency Video Coding (HEVC) and Versatile Video Coding (VVC) standards, spatial scalability using SHVC with 4K base layer (BL) and 8K enhancement-layer (EL), and super-resolution applied on 4K VVC signal after decoding to reach 8K resolution. For up-scaling, we selected the deep-learning-based super-resolution method called Super-Resolution with Feedback Network (SRFBN) and the Lanczos interpolation filter. We show that the deep-learningbased approach achieves visual quality gain over simulcast, especially on bit-rates lower than 30Mb/s with average gain of 0.77dB, 0.015, and 7.97 for PSNR, SSIM, and VMAF, respectively and outperforms the Lanczos filter in average by 29% of BD-rate savings.

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“…Using four bit-rates (60, 85, 110, and 135 Mbps), the six 8K 120-Hz sequences were encoded. In experimental broadcasting satellite transmissions, 85 Mbps is the same bit-rate as 8K 60-Hz video [17]. As defined by the ARIB TR-B39 ver.…”

Section: Experiments 1: Required Bit-rate For 8k 120-hz Videosmentioning

confidence: 99%

Video bit-rate requirements for 8K 120-Hz HEVC/H.265 temporal scalable coding: experimental study based on 8K subjective evaluations

Sugito¹,

Iwasaki²,

Chida³

et al. 2020

SIP

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8K video parameters were designed to provide an immersive experience; meanwhile, special considerations are necessary to assess the entire screen subjectively. This paper studies the video bit-rate required for 8K 119.88-Hz (120-Hz) and 59.94-Hz (60-Hz) the high efficiency video coding (HEVC)/H.265 temporal scalable coding based on subjective evaluation experiments. To investigate the appropriate bit-rate for both 8K 120- and 60-Hz videos for broadcasting purposes, we compress 8K 120-Hz test sequences using software that emulates our real-time HEVC encoder and conduct two types of experiments. The experimental results demonstrate that the required video bit-rate for 8K 120-Hz temporal scalable coding is estimated to be 85–110 Mbps, which is equivalent to the practical bit-rate for 8K 60-Hz videos, and the appropriate bit-rate for 8K 60-Hz video in 8K 120-Hz video at 85 Mbps is assumed to be ~80 Mbps. From the analyses of the encoded videos, it is confirmed that the experimental results are primarily influenced by the image quality on the slice boundary positioned at the middle of the screen height. When conducting the experiments, we determined settings referring to an initial 8K subjective assessment; we further mention requirements for future 8K subjective evaluations from the experimental results.

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Hevc/H.265 Codec System And Transmission Experiments Aimed At 8K Broadcasting

Cited by 15 publications

References 2 publications

A comparison of non-experts and experts using DSIS method

A comparison of non-experts and experts using DSIS method

Versatile Video Coding and Super-Resolution for Efficient Delivery of 8k Video with 4k Backward-Compatibility

Video bit-rate requirements for 8K 120-Hz HEVC/H.265 temporal scalable coding: experimental study based on 8K subjective evaluations

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