A 4K/60p HEVC Real-Time Encoding System With High Quality HDR Color Representations

Kobayashi, Daisuke; Nakamura, Ken; Onishi, Takayuki; Iwasaki, Hiromichi; Shimizu, Atsushi

doi:10.1109/tce.2018.2876677

Cited by 11 publications

(6 citation statements)

References 7 publications

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“…Onishi et al [104] developed the irst single-chip HEVC encoder (labeled as NARA) capable of encoding 4K resolution at 60 FPS with 4:2:2 subsampling that can also achieve 8K encoding in a multichip coniguration. This encoder was then used in future works by Kobayashi et al [76], Omori et al [103] and Omori et al [102]. In [76], the authors improved the perceptual quality of HDR video encoding.…”

Section: Inter-frame Compressionmentioning

confidence: 99%

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Image and Video Coding Techniques for Ultra-low Latency

et al. 2022

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The next generation of wireless networks fosters the adoption of latency-critical applications such as XR, connected industry, or autonomous driving. This survey gathers implementation aspects of different image and video coding schemes and discusses their tradeoffs. Standardized video coding technologies such as HEVC or VVC provide a high compression ratio, but their enormous complexity sets the scene for alternative approaches like still image, mezzanine, or texture compression in scenarios with tight resource or latency constraints. Regardless of the coding scheme, we found inter-device memory transfers and the lack of sub-frame coding as limitations of current full-system and software-programmable implementations.

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Section: Inter-frame Compressionmentioning

confidence: 99%

“…This encoder was then used in future works by Kobayashi et al [76], Omori et al [103] and Omori et al [102]. In [76], the authors improved the perceptual quality of HDR video encoding. In [103], the authors achieved 4K, 120 FPS encoding by using four parallel NARA encoders, each conigured for 2K, 120FPS encoding.…”

Section: Inter-frame Compressionmentioning

confidence: 99%

Image and Video Coding Techniques for Ultra-low Latency

et al. 2022

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“…However, due to the dynamic range limitation of widely available conventional displays, a lot of work has focussed on compressing the dynamic range OF HDR imagery to adapt to these displays [3]. With the development of HDR technologies, displays that can support HDR content are becoming a popular (and increasingly the only) choice for most consumers [4] [5] [6]. LED-based HDR displays, termed dual-panel display, are one of the predominant types of HDR displays available in the consumer electronics market, and the ones that offer the highest dynamic range currently.…”

Section: Introductionmentioning

confidence: 99%

Deep Controllable Backlight Dimming for HDR Displays

Duan

Marnerides

Chalmers

et al. 2022

IEEE Trans. Consumer Electron.

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“…In one chip, however, these can only encode 4K images up to 60 fps and do not encode high-frame-rate such as 120 fps. Although many devices have also been proposed to perform HEVC real-time encoding by embedding dedicated LSIs, FPGAs or CPUs [18]- [20], they support only up to 60 fps or limited HEVC processing such as intra-frame processing. Chida et al proposed an 8K/120 fps coding system [21], which encloses twelve 60 fps encoder devices in a single enclosure and is not a single high-frame-rate coding device.…”

Section: Introductionmentioning

confidence: 99%

4K 120fps HEVC Encoder with Multi-Chip Configuration

Omori

Nakamura

Onishi

et al. 2021

IEICE Trans. Commun.

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This paper describes a novel 4K 120 fps (frames per second) real-time HEVC (High Efficiency Video Coding) encoder for highframe-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/120 fps real-time encoding, which is twice the current 4K service frame rate of 60 fps, 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 21.8 msec 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.

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A 4K/60p HEVC Real-Time Encoding System With High Quality HDR Color Representations

Cited by 11 publications

References 7 publications

Image and Video Coding Techniques for Ultra-low Latency

Image and Video Coding Techniques for Ultra-low Latency

Deep Controllable Backlight Dimming for HDR Displays

4K 120fps HEVC Encoder with Multi-Chip Configuration

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