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post #11 of 12 Old 07-06-16, 05:37 PM Thread Starter
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Re: HDR Calibration & Discussion

ITU announces new standard for High Dynamic Range TV: ITU-R HDR-TV Recommendation BT.2100-0 (July 2016)

Geneva, 5 July 2016 – ITU 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.

“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 ITU-R UHDTV Recommendation BT.2020, approved in October 2015, represented the continuous evolution of television since it was invented in the 1930s, transforming the dim black and white screen into an ultra-high definition colour picture on large flat panel displays.

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.

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.

“This Recommendation is the culmination of three years of intensive work by dedicated image experts from around the world. HDR images are stunning and this is another major step forward in television quality,” said Andy Quested, Chairman of ITU-R Working Party 6C (WP 6C), which developed the new standard. “Programme makers today need a much wider range of options in order to meet the expectations of the different platforms they must supply, and this need for flexibility is catered for within the framework of a stable ITU-R Recommendation.”

Download Link: http://www.itu.int/dms_pubrec/itu-r/...7-I!!PDF-E.pdf


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post #12 of 12 Old 07-07-16, 12:22 PM
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Re: HDR Calibration & Discussion

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ConnecTED wrote: View Post
HDR/WCG Systems Survey - Technical Paper

The new UHDTV system will benefit greatly from Higher Dynamic Range (HDR) and Wide Color Gamut (WCG). These enhanced features have been received very positively by consumers, and CE manufacturers are moving very quickly to introduce equipment to the market with various levels of UHD capability.

This fast movement in the industry has left many confused about UHDTV capabilities, proposed system features, system compatibility, and standards.

This preliminary draft paper attempts to shed light on HDR and WCG, the different industry proposals, and how we test and calibrate the image accuracy of these new generation TVs. This paper will be repeatedly updated as the industry comes together on system standards.

Download it from here: http://calman.spectracal.com/hdr.html
okay so this might be a really stupid question for this level of talk but how would I go about calibrating a TV's HDMI input that is used with a chormecast (or any thing like a roku). How do I calibrate for Rec709, HDR-10 and DV at the same time? or can I just calibrate one while the others will not be perfect.

and how do I know if both Netflix and youtube have the same base color or will one be different from the other because youtube could push red while Netflix pushes Blue?
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