Compression Efficiency Improvement over HEVC Main 10 Profile for HDR and WCG Content
Taoran Lu, Fangjun Pu, Peng Yin, Yuwen He, Louis J. Kerofsky, Yan Ye, Zhouye Gu, David M. Baylon · 2016
The paper presents the joint proposal by Arris, Dolby and InterDigital as a response to the Call-for-Evidence of the High Dynamic Range and Wide Color Gamut (HDR/WCG) video compression in MPEG. The joint proposal introduces a set of new HDR coding technologies, including the IPT-PQ color space, the adaptive reshaping process, the color enhancement filters, and the adaptive transfer function. These new coding technologies are applied to the decoded output of an HEVC decoder. Hence, no changes to the lower level logics of the HEVC decoder are required to implement the proposal. Formal subjective tests conducted by MPEG confirmed that the proposal could achieve significant subjective quality improvements over the HEVC Main10 anchors at similar bit rates for HDR/WCG video content.