Adaptive multiple reference line candidate list reordering

Yujin Lee; Jeeyoon Park; Byeungwoo Jeon

doi:10.1117/12.2669361

25 March 2023 Adaptive multiple reference line candidate list reordering

Yujin Lee, Jeeyoon Park, Byeungwoo Jeon

Proceedings Volume 12592, International Workshop on Advanced Imaging Technology (IWAIT) 2023; 125922J (2023) https://doi.org/10.1117/12.2669361
Event: International Workshop on Advanced Imaging Technology (IWAIT) 2023, 2023, Jeju, Korea, Republic of

Abstract

Multiple reference line (MRL) intra prediction allows to use reference lines not necessarily immediately adjacent neighboring line or column in generating intra predictor. Compared to MRL already existing in the versatile video coding (VVC) standard which can use a total of three reference lines including the adjacent one, the MRL under discussion now in enhanced compression beyond VVC is extended to use a total of six reference lines. However, its MRL candidates are listed in a fixed order for all blocks without considering non-identical effectiveness of each reference line in intra prediction. In this paper, we propose a reordering scheme of the MRL candidate lines in the MRL list considering similarities between predictors generated by available reference lines. According to our experimental results, the proposed method is shown to achieve an overall coding gain of -0.02% in luma channel over the enhanced compression model (ECM) 5.0 under the all intra (AI) configuration of the common test condition (CTC).

Citation Download Citation

Yujin Lee, Jeeyoon Park, and Byeungwoo Jeon "Adaptive multiple reference line candidate list reordering", Proc. SPIE 12592, International Workshop on Advanced Imaging Technology (IWAIT) 2023, 125922J (25 March 2023); https://doi.org/10.1117/12.2669361

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KEYWORDS

Video

Video coding

Displays

Artificial intelligence

Chromium

Video compression

Computer engineering

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