Abstract
Ultra High Definition Television (4K and 8K UHDTV) broadcasting is planned to start in 2016 in Japan. Owing to the features of higher resolution, wider color gamut and higher-frame rate than those of HDTV, UHDTV provide viewers with a stronger sense of "being there" and sense of realness. An additional feature called High Dynamic Range (HDR) has been studied for inclusion in the UHDTV broadcasting. One of the HDR-TV systems is the Hybrid Log-Gamma (HLG) specified in ARIB STD-B67. We conducted a coding experiment to derive required bitrates to achieve broadcast quality when using HLG and HEVC in UHDTV broadcasting. We confirmed that it would be possible to deliver high quality HDR pictures at a comparable bit rate with that required for standard dynamic range (SDR) pictures.
