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=== [[Linear function (calculus)|Linear]] ===
A '''Linearlinear tranfer function''' describe is a [[Transfer function|tranfer function]] based on a [[Linear function (calculus)|linear function]].
Some EOTF and OETF have an initial linear portion folowwedfollowed by a non-linear part (i.e. sRGB, Rec.709<ref name=":1" /> and Rec.1886<ref name=":2" />).
=== [[Gamma correction|Gamma]] ===
* [[Rec. 601]], [[Rec. 709]] and [[Rec. 2020]]: The [[ITU-R]] '''recommendations BT.601, BT.709 and BT.2020''' describe the reference OETF of respectively [[Standard-definition television|SD-TV]], [[High-definition television|HD-TV]] and [[Ultra-high-definition television|UHD-TV]]. They are identical OETF based on a gamma curve and used for [[Standard-dynamic-range video|SDR-TV]].<ref>{{Cite web|title=BT.601 : Studio encoding parameters of digital television for standard 4:3 and wide screen 16:9 aspect ratios|url=https://www.itu.int/rec/R-REC-BT.601/en|access-date=2021-02-02|website=www.itu.int}}</ref><ref name=":1">{{Cite web|title=BT.709 : Parameter values for the HDTV standards for production and international programme exchange|url=https://www.itu.int/rec/R-REC-BT.709/en|access-date=2021-02-02|website=www.itu.int}}</ref><ref>{{Cite web|title=BT.2020 : Parameter values for ultra-high definition television systems for production and international programme exchange|url=https://www.itu.int/rec/R-REC-BT.2020/en|access-date=2021-02-02|website=www.itu.int}}</ref>
==== Rec.601, Rec.709 and Rec.2020 ====
The [[ITU-R]] recommendations* [[Rec. 601|BT.6011886]],: [[Rec.The 709|BT.709]]'''ITU-R andRecommendation [[Rec. 2020|BT.2020]]1886''' describe the reference OETFEOTF of respectively [[Standard-definition television|SD-TV]], [[High-definition television|HD-TV]] and [[Ultra-high-definition television|UHD-TV]]. They are identical OETF based on a gamma curve and used for [[Standard-dynamic-range video|SDR-TV]].<ref>{{Cite web|title=BT.601 : Studio encoding parameters of digital television for standard 4:3 and wide screen 16:9 aspect ratios|url=https://www.itu.int/rec/R-REC-BT.601/en|access-date=2021-02-02|website=www.itu.int}}</ref><ref name=":12">{{Cite web|title=BT.7091886 : ParameterReference valueselectro-optical for the HDTVtransfer standardsfunction for productionflat andpanel internationaldisplays programmeused exchange|url=https://www.itu.int/rec/R-REC-BT.709/en|access-date=2021-02-02|website=www.itu.int}}</ref><ref>{{Citein web|title=BT.2020 : ParameterHDTV values for ultra-high definition television systems forstudio production and international programme exchange|url=https://www.itu.int/rec/R-REC-BT.20201886/en|access-date=2021-02-02|website=www.itu.int}}</ref>
'''* [[sRGB]] ''': sRGB''' defines a transfer function based on a gamma curve and used for monitors, printers, and the [[World Wide Web|Web]]. It is standardized as '''IEC 61966-2-1:1999 '''<ref>{{Cite web|title=IEC 61966-2-1:1999 {{!}} IEC Webstore|url=https://webstore.iec.ch/publication/6169|access-date=2021-02-02|website=webstore.iec.ch}}</ref> ▼
==== Rec.1886 ====
The '''ITU-R Recommendation BT.1886''' describe the reference EOTF of [[Standard-dynamic-range video|SDR-TV]].<ref name=":2">{{Cite web|title=BT.1886 : Reference electro-optical transfer function for flat panel displays used in HDTV studio production|url=https://www.itu.int/rec/R-REC-BT.1886/en|access-date=2021-02-02|website=www.itu.int}}</ref>
==== sRGB ====
▲'''[[sRGB]]''' defines a transfer function based on a gamma curve and used for monitors, printers, and the [[World Wide Web|Web]]. It is standardized as IEC 61966-2-1:1999<ref>{{Cite web|title=IEC 61966-2-1:1999 {{!}} IEC Webstore|url=https://webstore.iec.ch/publication/6169|access-date=2021-02-02|website=webstore.iec.ch}}</ref>
=== [[Logarithmic integral function|Logarithmic]] ===
=== Other ===
The* '''perceptual[[Perceptual Quantizer|Perceptual quantizer ]]: ('''PQ )''' is a [[transfer function]] developed by [[Dolby Laboratories|Dolby]] for [[High dynamic range|HDR]] and allowing a a [[luminance]] level of up to 10,000 [[Candela per square metre|cd/m<sup>2</sup>]]. 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> ▼==== PQ ====
* [[Hybrid Log-Gamma]] : ('''HLG''' ) is a [[transfer function]] developed by the BBC and NHK for [[High dynamic range|HDR]] and offering some [[backward compatibility]] with [[Standard-dynamic-range video|SDR]]. ▼
▲The '''perceptual quantizer (PQ)''' is a [[transfer function]] developed by [[Dolby Laboratories|Dolby]] for [[High dynamic range|HDR]] and allowing a a [[luminance]] level of up to 10,000 [[Candela per square metre|cd/m<sup>2</sup>]]. 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>
==== HLG ====
▲[[Hybrid Log-Gamma]] ('''HLG''') is a [[transfer function]] developed by the BBC and NHK for [[High dynamic range|HDR]] and offering some [[backward compatibility]] with [[Standard-dynamic-range video|SDR]].
== Transfer functions in codecs ==
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