High Dynamic Range Television standard fastlagt
High Dynamic Range (HDR) er allerede aktuelt på streamingindhold og det er nu rykket et skridt nærmere også på tv-fronten. ITU har nemlig nu fastlagt standarden/anbefalinger for High Dynamic Range Television.
HDR-TV standarden har fået navnet BT.2100 og den skulle gøre det muligt for tv produktioner og kanaler at udnytte de nye muligheder f.eks. i forhold til kraftigere lysgengivelse.
Her mere info på engelsk.
The HDR-TV Recommendation details two options for producing High Dynamic Range TV images. The Perceptual Quantization (PQ) specification achieves a very wide range of brightness levels using a transfer function that is finely tuned to match the human visual system and the Hybrid Log-Gamma (HLG) specification which offers a degree of compatibility with legacy displays by more closely matching the previously established television transfer curves. The Recommendation also outlines a simple conversion process between the two HDR-TV options.
The ITU-R Recommendation BT.2100 also allows TV producers to choose from three levels of detail or resolution: HDTV (1920 by 1080), and UHDTV ‘4K’ (3840 by 2160) and ‘8K’ (7680 by 4320) – all of which use the progressive imaging system with extended colour gamut and range of frame-rates in ITU’s UHDTV Recommendation BT.2020.
Kilde: Broadband TV News
