- 4K . 4,096X2,160 3,840X2,160 4K UHD (Ultra High Definition) . 4,096 3,840 .

: Sony Blog(http://www.stylezineblog.com)

- 2014 4K . HD (rec.709) rec.2020 UHD 4K .

- Gamma . CRT , TV 1:1 , TV 2.2, 2.4 Gamma . 80% 0.82.2(0.822) 61.22% . .

- UHD HD 4 , . - ( ) ( ) HD . HD 4K .

: Sony Blog(http://www.stylezineblog.com)

- 0 Nits . , TV

. TV , 46 Nits, TV 100 Nits .

- : Luminance Level, ( Nits , (cd/m2) .)

- HDR SDR(Standard Dynamic Range, ) HDR 0.01 Nits - 100 Nits // . 2D . Dolby HDR Dolby Vision 2014 CES BBC & NHK Technicolor HDR .

: http://www.realhd.co.kr/

- UHDTV Dolby Vision . , Dolby Vision . ( Dolby Vision TV .)

- Dolby HDR HDR . (Demux) 2 , . .

- HDR 2014 SMPTE(Society of Motion Picture & Television Engineers) . Dolby SMPTE HDR . SMPTE HDR ST 2084/2086 HDR SEI(Supplementary Enhancement Information) () HEVC . - SMPTE ST 2084 HDR Gamma , SMPTE ST 2086 (VUI) HDR (SEI) HEVC . - Dolby Vision SMPTE Dolby HDR .

- (CEA, Consumer Electronics Association) TV , HDR(High Dynamic Range) . CEA Video Division HDR CEA CEA-861-F HDR , CEA-861.3 HDR / , IP HDMI HDR10 / , EOTF( ) 4 .

( HDR10 HDR . HDR10 , HDR, iPhone HDR .)

( cf. HDMI 2.0a HDR HDMI .)

- HDR10 . EOTF: SMPTE ST 2084 : 4:2:0 (Bit Depth): 10bit (Color Primaries): rec.2020 : SMPTE ST 2086, MaxFALL(Maximum Frame Average Light Level), MaxCLL(Maximum Content Light Level)

- (Gamma) HDR . , 1,000 Nits 10,000 Nits UHD TV . , Dolby PQ(Perceptual Quantizer) ST 2084 Gamma SMPTE , UltraHD Bluray .

- , , Gamma .

: http://www.smpte.org

: http://www.smpte.org

- , 100 Nits 1,000 Nits . , ( ) , .

- Gamma PQ .

- (log) SDR HDR PQ .

TV Pipeline for HDR contents

PQ EOTF

HDR HEVC Decoder

TV, Display ACES mastering

HDR Grading

16bits 10bits

PQ OETF

ST. 2084

HDR HEVC Encoder

(VUI, SEI)

ST. 2086

BT.2020

PQ OETF () PQ EOTF () Linearizatin

- SMPTE ST.2084 OETF 10bit HEVC Electro-Optical Transfer Function( ) .,

Input Luminance Input Luminance

o u T P u t

o u T P u t

32bits

- , HDR . ( ) - DR( ) . ( LED TV ( ) )

HDR ? - - HDR - (, , ) - (rec.2020)

Concept Something, youve never seen - -

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. , . , ? . , . , HDR

The color, youve never seen

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- 1stop - 1stop - Evenly -

DI & Compositing

Full range(Super white & Sub zero) - - ACES - (16bits) Data SDR 2 - (1,000 Nits ) - Log Composite (CGI EXR HDR )

. . Contrast , , . Contrast

The Contrast, youve never seen

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- - PQ - BBC NHK Hybrid Log-gamma (SDR HDR )

Seeing is believing - , , - - -

, , , .

The Detail, youve never seen

PQ OETF PQ EOTF

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SDR

- HDR (SDR) .

- UHD HDR .

Thank you www.remedialab.com

sy.lee@trigon.kr