Transfer functions in imaging: Difference between revisions

Revision as of 07:00, 2 February 2021

Revision as of 19:05, 2 February 2021

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=== Other ===

* [[Perceptual Quantizer|Perceptual quantizer]]: '''PQ''' is a [[transfer function]] developed by [[Dolby Laboratories|Dolby]] for [[High-dynamic-range video|HDR]] and allowing a a [[luminance]] level of up to 10,000 [[Candela per square metre|cd/m²]]. It is standardized as '''SMPTE ST 2084'''.<ref>{{Cite web|last=|first=|date=|title=An Introduction to Dolby Vision|url=https://professional.dolby.com/siteassets/pdfs/dolby-vision-whitepaper_an-introduction-to-dolby-vision_0916.pdf|url-status=live|archive-url=|archive-date=|access-date=2 February 2021|website=}}</ref>

* [[Hybrid Log-Gamma]]: '''HLG''' is a [[transfer function]] developed by the BBC and NHK for [[High-dynamic-range video|HDR]] and offering some [[backward compatibility]] on [[Standard-dynamic-range video|SDR]] displays. HLG is an hybrid transfer function in which the lower half of the signal values use a [[Gamma correction|gamma curve]] and the upper half of the signal values use a [[Logarithmic growth|logarithmic curve]].<ref name="DisplayHDR2015BBC">{{cite news|author=T. Borer|author2=A. Cotton|title=A "Display Independent" High Dynamic Range Television System|publisher=[[BBC]]|url=http://downloads.bbc.co.uk/rd/pubs/whp/whp-pdf-files/WHP309.pdf|url-status=live|access-date=1 November 2015|archive-url=https://web.archive.org/web/20160207193353/http://downloads.bbc.co.uk/rd/pubs/whp/whp-pdf-files/WHP309.pdf|archive-date=7 February 2016}}</ref><ref>{{Cite web|last=ARIB|first=Association of Radio Industries and Businesses|date=3 July 2015|title=ARIB STD-B67|url=http://www.arib.or.jp/english/html/overview/doc/2-STD-B67v1_0.pdf|url-status=live|archive-url=https://web.archive.org/web/20170329122104/http://www.arib.or.jp/english/html/overview/doc/2-STD-B67v1_0.pdf|archive-date=29 March 2017|access-date=8 August 2017}}</ref>

==References==