About: Perceptual quantizer

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The perceptual quantizer (PQ), published by SMPTE as SMPTE ST 2084, is a transfer function that allows for HDR display by replacing the gamma curve used in SDR. It is capable of representing luminance level up to 10000 cd/m2 (nits) and down to 0.0001 nits. It has been developed by Dolby and standardized in 2014 by SMPTE and also in 2016 by ITU in Rec. 2100. ITU specifies the use of PQ or HLG as transfer functions for HDR-TV. PQ is the basis of HDR video formats (such as Dolby Vision, HDR10 and HDR10+) and is also used for HDR still picture formats. PQ is not backward compatible with the BT.1886 EOTF (i.e. the gamma curve of SDR), while HLG is compatible.

Attributes	Values
rdfs:label	知覚量子化器 (ja) Perceptual quantizer (en)
rdfs:comment	知覚量子化器（pereptual quantizer、PQ）は、SMPTE ST 2084としてSMPTEが公開した、SDRで使用されているガンマ曲線と置き換えることでHDR表示を可能とする伝達関数である。この伝達関数を使用すると、最大10,000 cd/m2、最小0.0001 cd/m2までの輝度レベルを表現することができる。ドルビーによって開発され、SMPTEによって2014年に標準化され、ITUによっても2016年にRec. 2100として標準化された。ITUはPQないしHLGをHDR-TVの伝達関数として指定している。PQはHDRビデオ形式（ドルビー・ビジョン、HDR10およびHDR10+など）の基礎であり、HDR静止画フォーマットでも使われている。 PQはについてのヒトの視覚を基礎とした伝達関数であり、12ビットで目に見える擬似輪郭が発生しないようにできる。ガンマ曲線を10,000 cd/m2まで拡張するには15ビットが必要とされる。 (ja) The perceptual quantizer (PQ), published by SMPTE as SMPTE ST 2084, is a transfer function that allows for HDR display by replacing the gamma curve used in SDR. It is capable of representing luminance level up to 10000 cd/m2 (nits) and down to 0.0001 nits. It has been developed by Dolby and standardized in 2014 by SMPTE and also in 2016 by ITU in Rec. 2100. ITU specifies the use of PQ or HLG as transfer functions for HDR-TV. PQ is the basis of HDR video formats (such as Dolby Vision, HDR10 and HDR10+) and is also used for HDR still picture formats. PQ is not backward compatible with the BT.1886 EOTF (i.e. the gamma curve of SDR), while HLG is compatible. (en)
dcterms:subject	Transfer functions
Wikipage page ID	51174008 (xsd:integer)
Wikipage revision ID	1110359896 (xsd:integer)
Link from a Wikipage to another Wikipage	Electro-optical transfer function Colour banding Transfer functions Dolby Vision Gamma correction HDR10 HDR10+ High-dynamic-range video International Telecommunication Union Hybrid log–gamma EOTF High-dynamic-range television Rec. 2100 Dolby Laboratories Society of Motion Picture and Television Engineers ITU-R BT.1886 Candela per square metre Standard-dynamic-range video Transfer functions in imaging
sameAs	Perceptual quantizer Perceptual quantizer Perceptual quantizer
dbp:wikiPageUsesTemplate	dbt:Reflist dbt:Short_description dbt:Dynamic_range_color_representation
has abstract	The perceptual quantizer (PQ), published by SMPTE as SMPTE ST 2084, is a transfer function that allows for HDR display by replacing the gamma curve used in SDR. It is capable of representing luminance level up to 10000 cd/m2 (nits) and down to 0.0001 nits. It has been developed by Dolby and standardized in 2014 by SMPTE and also in 2016 by ITU in Rec. 2100. ITU specifies the use of PQ or HLG as transfer functions for HDR-TV. PQ is the basis of HDR video formats (such as Dolby Vision, HDR10 and HDR10+) and is also used for HDR still picture formats. PQ is not backward compatible with the BT.1886 EOTF (i.e. the gamma curve of SDR), while HLG is compatible. PQ is a non-linear transfer function based on the human visual perception of banding and is able to produce no visible banding in 12 bits. A power function (used as EOTFs in standard dynamic range applications) extended to 10000 cd/m2 would have required 15 bits. (en) 知覚量子化器（pereptual quantizer、PQ）は、SMPTE ST 2084としてSMPTEが公開した、SDRで使用されているガンマ曲線と置き換えることでHDR表示を可能とする伝達関数である。この伝達関数を使用すると、最大10,000 cd/m2、最小0.0001 cd/m2までの輝度レベルを表現することができる。ドルビーによって開発され、SMPTEによって2014年に標準化され、ITUによっても2016年にRec. 2100として標準化された。ITUはPQないしHLGをHDR-TVの伝達関数として指定している。PQはHDRビデオ形式（ドルビー・ビジョン、HDR10およびHDR10+など）の基礎であり、HDR静止画フォーマットでも使われている。 PQはについてのヒトの視覚を基礎とした伝達関数であり、12ビットで目に見える擬似輪郭が発生しないようにできる。ガンマ曲線を10,000 cd/m2まで拡張するには15ビットが必要とされる。 (ja)
prov:wasDerivedFrom	wikipedia-en:Perceptual_quantizer?oldid=1110359896&ns=0
page length (characters) of wiki page	8817 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Perceptual_quantizer
is Link from a Wikipage to another Wikipage of	Perceptual Quantizer VP9 EBU colour bars Coding-independent code points DisplayID 4K resolution HDMI High Efficiency Video Coding JPEG XL Hybrid log–gamma ATSC 3.0 High-dynamic-range television High dynamic range Rec. 2100 YouTube ST.2084 ICtCp Transfer functions in imaging PQ (transfer function) SMPTE ST 2084 Perceptual quantization
is Wikipage redirect of	Perceptual Quantizer ST.2084 PQ (transfer function) SMPTE ST 2084 Perceptual quantization
is foaf:primaryTopic of	wikipedia-en:Perceptual_quantizer

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