Luma-aware multi-model rate-control for HDR content in HEVC
Karina Ruby Perez Daniel, Victor F. Sanchez · 2017
Rate control (RC) is an important tool that helps to control the bit rate of the compressed media. Current HEVC implementations include an RC algorithm, based on a R - λ model, that does not consider the wide range of luma values depicted in HDR content. This paper proposes a multi-R - λ-model approach for RC in HEVC that accurately attains a target bit rate while improving the reconstruction quality of HDR content, especially for very bright regions. Results, in terms of the mPSNR and HDR-VDP-2 metrics, confirm the advantages of our approach compared to the current RC algorithm in HEVC.