Adapting Content to Different Display Capabilities and Viewing Environments

The emergence of HDR content and displays requires methods for adapting content to different display capabilities. This paper addresses mastering and encoding considerations, and presents methods for adapting HDR-mastered content for viewing on displays with different capabilities and viewing environments. Specifically, HDR grading considerations and coordinated methods for dealing with reductions in highlight and/or shadow range are presented, along with methods for adjusting mid-tone brightness to compensate for reductions in dynamic range and/or different surround luminances. The degree to which such adaptations can and should preserve the mastered appearance are discussed. Issues in converting between SDR (1886), HLG and PQ EOTFs are also addressed. Conclusions note the importance of creating high quality, well-defined masters on well-behaved displays in appropriate environments, and some problems that can arise when displays aggressively re-map images. Recommendations include mastering for a target HDR display, methods for adapting content for different receiving displays, and coordination of display and surround luminances to preserve the mastered appearance.

Published

2016-10

Content type

Original Research

Keywords

High dynamic range, HDR, wide color gamut, WCG, display adaptation, PQ, HLG, ITU-R BT.2100, mastering, color grading, reference display, converting HDR, OETF, OOTF, EOTF

DOI

10.5594/M001684

ISBN

978-1-61482-957-7