HDR video coding with MPEG-5 LCEVC

Jiménez-Moreno, Amaya; Ciccarelli, Lorenzo; Clucas, Rick; Ferrara, Simone

doi:10.1145/3510450.3517307

Cited by 5 publications

(3 citation statements)

References 8 publications

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“…PSNR, the metric used in the design of BD calculations, remains the choice of quality metric to measure distortion in standardization activities. However, many other (non-standardization) works have used other objective quality metrics such as Structural Similarity (SSIM) [16] and Video Multimethod Assessment Fusion (VMAF) [17], and in some cases, subjective measurements such as Mean Opinion Score (MOS) [18][19][20] as metrics to measure the amount of distortion introduced. Nevertheless, there exist quite a lot of differences in the behavior of the metrics.…”

Section: A Motivationmentioning

confidence: 99%

Revisiting Bjontegaard delta bitrate (BD-BR) computation for codec compression efficiency comparison

Barman

Martini

Reznik

2022

Proceedings of the 1st Mile-High Video Conference

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The Bjøntegaard Delta (BD) method proposed in 2001 has become a popular tool for comparing video codec compression efficiency. It was initially proposed to compute bitrate and quality differences between two Rate-Distortion curves using PSNR as distortion metric. Over the years, many works have calculated and reported BD results using other objective quality metrics such as SSIM, VMAF and, in some cases, even subjective ratings (mean opinion scores). However, the lack of consolidated literature explaining the metric, its evolution over the years, and a systematic evaluation of the same under different test conditions can result in a wrong interpretation of the BD results thus obtained.Towards this end, this paper presents a detailed tutorial describing the BD method and example cases where the metric might fail. We also provide a detailed history of its evolution, including a discussion of various proposed improvements and variations over the last 20 years. In addition, we evaluate the various BD methods and their open-source implementations, considering different objective quality metrics and subjective ratings taking into account different RD characteristics. Based on our results, we present a set of recommendations on using existing BD metrics and various insights for possible exploration towards developing more effective tools for codec compression efficiency evaluation and comparison.

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Section: A Motivationmentioning

confidence: 99%

Revisiting Bjontegaard delta bitrate (BD-BR) computation for codec compression efficiency comparison

Barman

Martini

Reznik

2022

Proceedings of the 1st Mile-High Video Conference

View full text Add to dashboard Cite

show abstract

“…The paper also provides test results on computational complexity and a study of the correlation of bitrate savings for LCEVC with the temporal and spatial complexity of the video sequences, reporting low correlation with temporal activity and high correlation with spatial activity. In [14] the authors report a comparison of LCEVC to AVC (in its implementation x264) and HEVC (in its implementation x265), when applied to High Dynamic Range (HDR) video sequences. The paper shows that LCEVC is capable of producing an HDR quality video starting from an 8-bit x264 base layer, thus providing HDR video in streaming applications.…”

Section: Introductionmentioning

confidence: 99%

Verification Test of the Low Complexity Enhancement Video Coding (LCEVC) Standard

Battista

Meardi²,

Ferrara³

et al. 2023

IEEE Trans. Circuits Syst. Video Technol.

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This paper reports the methodology and results of the test campaign performed in the context of the development of the Low Complexity Enhancement Video Coding (LCEVC) ISO standard. LCEVC is a video coding technology that can be applied in conjunction to any other single-layer video coding technology to re-encode the residuals between the original video and its compressed representation. The first part of the paper describes the methodology for the verification tests: Requirements, Test Conditions, Test Sequences, Test Methods (Metrics); the second one reports the results of the objective and subjective tests carried out applying such methodology. The bitrate savings achieved with LCEVC when used in conjunction with four video codecs (AVC, HEVC, EVC, VVC) are reported.

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“…In [24] the authors report a comparison of LCEVC to AVC (in its implementation x264) and HEVC (in its implementation x265), when applied to High Dynamic Range (HDR) video sequences. The paper includes results for bitrate savings for LCEVC compared to the base codec, using the metrics PSNR, MS-SIM, and VMAF versus Bitrate.…”

mentioning

confidence: 99%

Overview of the Low Complexity Enhancement Video Coding (LCEVC) Standard

Battista

Meardi²,

Ferrara³

et al. 2022

IEEE Trans. Circuits Syst. Video Technol.

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The Low Complexity Enhancement Video Coding (LCEVC) specification is a recent standard approved by the ISO/IEC JTC 1/SC 29/WG04 (MPEG) Video Coding. The main goal of LCEVC is to provide a standalone toolset for the enhancement of any other existing codec. It works on top of other coding schemes, resulting in a multi-layer video coding technology, but unlike existing scalable video codecs, adds enhancement layers completely independent from the base video. The LCEVC technology takes as input the decoded video at lower resolution and adds up to two enhancement sub-layers of residuals encoded with specialized low-complexity coding tools, such as simple temporal prediction, frequency transform, quantization, and entropy encoding. This paper provides an overview of the main features of the LCEVC standard: high compression efficiency, low complexity, minimized requirements of memory and processing power.

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HDR video coding with MPEG-5 LCEVC

Cited by 5 publications

References 8 publications

Revisiting Bjontegaard delta bitrate (BD-BR) computation for codec compression efficiency comparison

Revisiting Bjontegaard delta bitrate (BD-BR) computation for codec compression efficiency comparison

Verification Test of the Low Complexity Enhancement Video Coding (LCEVC) Standard

Overview of the Low Complexity Enhancement Video Coding (LCEVC) Standard

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