Improvements on HDR10

Abstract

This paper presents two approaches to coding HDR/WCG video, by modifying certain components of an HDR video processing chain developed recently in standards committees (the Joint Collaborative Team on Video Coding, or JCT-VC, of ITU|ISO/IEC), which is an HDR10 compliant system (the “anchor”). One approach, called FastVDO_ECHDR, differs from the anchor in two tools: the intermediate color representation, and the chroma resampling filters. A second approach, called FastVDO_HDR, further uses a new video data adaptive tuning process, which differs from the ST.2084 transfer function used in the anchor. It is asserted that both systems perform well, with subjective visual quality superior to the output of an HDR10 anchor. Representative objective results for these systems include: (a) FastVDO_ECHDR, results for RGB-PSNR, DE100, MD100 were -1.1%, 10.3%, 38% respectively; (b) FastVDO_HDR, results for RGB-PSNR, DE100, MD100, were - 43.7%, -3.3%, -33.7% respectively.