henrymiller
Digital-Forum Senior
- Registrato
- 26 Marzo 2002
- Messaggi
- 236
ciao a tutti
segnalo la emissione di una nuova specifica ITU per la regolamentazione dell'HDR.
sul sito ITU vi è un magnifico capitolato tecnico da scaricare come allegato per i piu interessati al punto di visto tecnico.
aggiungo solo che la specifica BT.2100 è compatibile con semplici aggiornamenti software, che potrebbe far pensare all'allineamento di televisori già sul mercato e non solo quelli di successiva uscita.
inoltre consentirebbe uno stardard de facto, cosa attualmente non ancora raggiunta (indipendentemente da contrasti su chi stia progettando il "miglior" HDR), mette insieme le specifiche PQ e HLG (di cui esiste un canale 4k emesso free a 19e astra) ed è valido anche per segnali HD.
qui il testo in inglese:
ITU announces new standard for HDR TV
4K HDRITU has announced a new standard for High Dynamic Range Television that represents a major advance in television broadcasting.
High Dynamic Range Television (HDR-TV) brings an incredible feeling of realism, building further on the superior colour fidelity of ITU’s Ultra-High Definition Television (UHDTV) Recommendation BT.2020. ITU’s Radiocommunication Sector (ITU-R) has developed the standard – or Recommendation – in collaboration with experts from the television industry, broadcasting organizations and regulatory institutions in its Study Group 6.
This latest ITU-R HDR-TV Recommendation BT.2100 brings a further boost to television images, giving viewers an enhanced visual experience with added realism. The HDR-TV Recommendation allows TV programmes to take full advantage of the new and much brighter display technologies.
HDR-TV can make outdoor sunlit scenes appear brighter and more natural, adding highlights and sparkle. It enhances dimly lit interior and night scenes, revealing more detail in darker areas, giving TV producers the ability to reveal texture and subtle colours that are usually lost with existing Standard Dynamic Range TV.
“High Dynamic Range Television will bring a whole new viewing experience to audiences around the world,” said ITU Secretary-General Houlin Zhao, welcoming the announcement.
“TV programming will be enhanced with brighter pictures that add sparkle to entertainment and realism to news coverage.”
“High Dynamic Range Television represents an important step towards the virtual-reality quality of experience to be delivered by future broadcasting and multimedia systems,” said François Rancy, Director of the ITU Radiocommunication Bureau. He congratulated Yukihiro Nishida, Chairman of ITU-R Study Group 6, for this major achievement.
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.
segnalo la emissione di una nuova specifica ITU per la regolamentazione dell'HDR.
sul sito ITU vi è un magnifico capitolato tecnico da scaricare come allegato per i piu interessati al punto di visto tecnico.
aggiungo solo che la specifica BT.2100 è compatibile con semplici aggiornamenti software, che potrebbe far pensare all'allineamento di televisori già sul mercato e non solo quelli di successiva uscita.
inoltre consentirebbe uno stardard de facto, cosa attualmente non ancora raggiunta (indipendentemente da contrasti su chi stia progettando il "miglior" HDR), mette insieme le specifiche PQ e HLG (di cui esiste un canale 4k emesso free a 19e astra) ed è valido anche per segnali HD.
qui il testo in inglese:
ITU announces new standard for HDR TV
4K HDRITU has announced a new standard for High Dynamic Range Television that represents a major advance in television broadcasting.
High Dynamic Range Television (HDR-TV) brings an incredible feeling of realism, building further on the superior colour fidelity of ITU’s Ultra-High Definition Television (UHDTV) Recommendation BT.2020. ITU’s Radiocommunication Sector (ITU-R) has developed the standard – or Recommendation – in collaboration with experts from the television industry, broadcasting organizations and regulatory institutions in its Study Group 6.
This latest ITU-R HDR-TV Recommendation BT.2100 brings a further boost to television images, giving viewers an enhanced visual experience with added realism. The HDR-TV Recommendation allows TV programmes to take full advantage of the new and much brighter display technologies.
HDR-TV can make outdoor sunlit scenes appear brighter and more natural, adding highlights and sparkle. It enhances dimly lit interior and night scenes, revealing more detail in darker areas, giving TV producers the ability to reveal texture and subtle colours that are usually lost with existing Standard Dynamic Range TV.
“High Dynamic Range Television will bring a whole new viewing experience to audiences around the world,” said ITU Secretary-General Houlin Zhao, welcoming the announcement.
“TV programming will be enhanced with brighter pictures that add sparkle to entertainment and realism to news coverage.”
“High Dynamic Range Television represents an important step towards the virtual-reality quality of experience to be delivered by future broadcasting and multimedia systems,” said François Rancy, Director of the ITU Radiocommunication Bureau. He congratulated Yukihiro Nishida, Chairman of ITU-R Study Group 6, for this major achievement.
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.
