ITU-R BT 2111-0-2017 Specification of colour bar test pattern for high dynamic range television systems.pdf

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1、 Recommendation ITU-R BT.2111-0 (12/2017) Specification of colour bar test pattern for high dynamic range television systems BT Series Broadcasting service (television) ii Rec. ITU-R BT.2111-0 Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and econ

2、omical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of the Radiocommunication Sector are performed by

3、 World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in Annex 1 of Resolution ITU-R 1. Forms to be us

4、ed for the submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R patent information database can also be found. Se

5、ries of ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (television) F Fixed service M Mobile, radiodete

6、rmination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed service systems SM Spectrum management SNG Sa

7、tellite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2017 ITU 2017 All rights reserved. No part of this pub

8、lication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R BT.2111-0 1 RECOMMENDATION ITU-R BT.2111-0 Specification of colour bar test pattern for high dynamic range television systems (Question 142-2/6) (2017) Scope This Recommendation specifies reference tes

9、t patterns for the high dynamic range television systems specified in Recommendation ITU-R BT.2100. Keywords Test pattern, test signal, HDR, HDR-TV, colour bars, PQ, HLG The ITU Radiocommunication Assembly, considering a) that test patterns provide a convenient means of assessing chrominance and lum

10、inance performance in a television system; b) that such a test pattern may be useful when broadcasting in multiple formats or when converting between formats; c) that the use of a test pattern can simplify test procedures and reduce the opportunity for misinterpretation of signal parameters and misa

11、lignment of systems, noting that Recommendation ITU-R BT.2100 specifies image parameter values for high dynamic range television for use in production and international programme exchange, recommends that the test patterns defined in Annex 1 should be implemented and may be used for production and d

12、istribution purposes in high dynamic range television (HDR-TV) systems. 2 Rec. ITU-R BT.2111-0 Annex 1 (normative) Specifications of test pattern 1 Normative references Recommendation ITU-R BT.471 Nomenclature and description of colour bar signals Recommendation ITU-R BT.2100 Image parameter values

13、for high dynamic range television for use in production and international programme exchange Recommendation ITU-R BT.709 Parameter values for the HDTV standards for production and international programme exchange. 2 Purpose The reference test pattern has several purposes: quality control of chromina

14、nce and luminance through the production chain; checking and adjusting the chrominance and luminance alignment of broadcast equipment, particularly video monitors; general testing of equipment for video production, emission and presentation; establishing that a video circuit is active and that assoc

15、iated audio is available. It is not intended that this test pattern be used for black level adjustment, which is best set using a PLUGE signal. 3 System types The pattern described in this Recommendation is intended for use with Recommendation ITU-R BT.2100. These systems are distinguished by the pr

16、oportions of their colour encoding (or “colorimetry”) and by their resolution. 4 Sections of test pattern1 The various sections of the test pattern for the HLG system with narrow range coding are shown in Fig. 1; the pattern for the PQ system with narrow range coding is shown in Fig. 2, and the patt

17、ern for the PQ system with full range coding is shown in Fig. 3. A colour diagram is shown in Fig. 4. See also Attachments 1 and 2. 1 It is desirable that implementers should include in this test signal some visual identification of the signal format (HLG narrow range, PQ narrow range, or PQ full ra

18、nge). The test pattern includes grey bars (top right and top left) that may optionally be used for this and/or other purposes. Rec. ITU-R BT.2111-0 3 FIGURE 1 Test pattern details for HLG narrow range BT . 21 11 -01Rampc d d d e d d d cc/ 3 c/ 3 c/ 3 c/ 3 c/ 3 c/ 3g h g h g i j kb/1275%w h i t e0%b

19、l ackb/2bb/12b/12b/475%BT.709magenta75%BT.709red75%BT.709blue0%b l ack75%w h i t e75%y el l o w75%cy an75%g reenf- 7%S t e p75%mag en t a75%red75%b l u e40%g rey75%w hi t e75%w hi t e0%S t e p10%S t e p20%S t e p30%S t e p40%S t e p50%S t e p60%S t e p70%S t e p80%S t e p90%S t e p100%S t e p109%S t

20、 e p109%100%0%bl a c k75%BT.709yellow75%BT.709cyan75%BT.709green40%g rey0%blackad / 2 d / 2 d / 2 d / 2 e/ 2 e/ 2 d / 2 d / 2 d / 2 d / 2 d / 2 d / 20%7%100%w hi t e100%ye l l ow100%c ya n100%gr e e n100%m a ge nt a100%r e d100%bl ue0%b l ack+4%black0%black2%black+2%blackFIGURE 2 Test pattern detail

21、s for PQ narrow range BT . 21 11 -02R am pc d d d e d d d cc/ 3 c/ 3 c/ 3 c/ 3 c/ 3 c/ 3g h g h g i j kb/1258%w h i t e0%b l ac kb/2bb/12b/12b/458%BT.709magenta58%BT.709red58%BT.709blue0%b l ac k58%w h i t e58%y el l o w58%cy an58%g re enf- 7%S t e p58%ma g en t a58%red58%blue40%g re y58%w hi t e58%

22、w hi t e0%S t e p10%S t e p20%S t e p30%S t e p40%S t e p50%S t e p60%S t e p70%S t e p80%S t e p90%S t e p100%S t e p109%S t e p109%100%0%bl a c k58%BT.709yellow58%BT.709cyan58%BT.709green40%g re y0%blackad/2 d/2 d/2 d/2 e/ 2 e/ 2 d/2 d/2 d/2 d/2 d/2 d/20%7%100%w hi t e100%ye l l ow100%c ya n100%gr

23、 e e n100%m a ge nt a100%r e d100%bl ue0%b l ac k+4%black0%black2%black+2%black4 Rec. ITU-R BT.2111-0 FIGURE 3 Test pattern details for PQ full range BT . 21 11 -03Rampc d d d e d d d cc/ 3 c/ 3 c/ 3 c/ 3 c/ 3 c/ 3g h g h g i j kb/1258%w h i t e0%b l ackb/2bb/12b/12b/458%BT.709magenta58%BT.709red58%

24、BT.709blue0%b l ack58%w h i t e58%y el l o w58%cy an58%g reenf0%S t e p58%mag en t a58%red58%b l u e40%g rey58%w hi t e58%w hi t e0%S t e p10%S t e p20%S t e p30%S t e p40%S t e p50%S t e p60%S t e p70%S t e p80%S t e p90%S t e p100%S t e p100%S t e p100%0%bl a c k58%BT.709yellow58%BT.709cyan58%BT.7

25、09green40%g rey0%blackad / 2 d / 2 d / 2 d / 2 e/ 2 e/ 2 d / 2 d / 2 d / 2 d / 2 d / 2 d / 20%100%w hi t e100%ye l l ow100%c ya n100%gr e e n100%m a ge nt a100%r e d100%bl ue0%b l ack+4%black0%black0%black+2%blackTABLE 1 Bar size to 2K, 4K and 8K format Bar size (pixel) 2K 4K 8K a 1920 3840 7680 b 1

26、080 2160 4320 c 240 480 960 d 206 412 824 e 204 408 816 f 136 272 544 g 70 140 280 h 68 136 272 i 238 476 952 j 438 876 1752 k 282 564 1128 Rec. ITU-R BT.2111-0 5 FIGURE 4 Colour diagram of the test pattern BT . 21 11 -04 TABLE 2 Signal level for HLG narrow range 10 bits 12 bits Image Area R G B R G

27、 B 100% White 940 940 940 3760 3760 3760 100% Yellow 940 940 64 3760 3760 256 100% Cyan 64 940 940 256 3760 3760 100% Green 64 940 64 256 3760 256 100% Magenta 940 64 940 3760 256 3760 100% Red 940 64 64 3760 256 256 100% Blue 64 64 940 256 256 3760 75% White 721 721 721 2884 2884 2884 75% Yellow 72

28、1 721 64 2884 2884 256 75% Cyan 64 721 721 256 2884 2884 75% Green 64 721 64 256 2884 256 75% Magenta 721 64 721 2884 256 2884 75% Red 721 64 64 2884 256 256 75% Blue 64 64 721 256 256 2884 40% Grey 414 414 414 1656 1656 1656 7% Step 4 4 4 16 16 16 6 Rec. ITU-R BT.2111-0 TABLE 2 (end) 10 bits 12 bit

29、s Image Area R G B R G B 0% Step 64 64 64 256 256 256 10% Step 152 152 152 608 608 608 20% Step 239 239 239 956 956 956 30% Step 327 327 327 1308 1308 1308 40% Step 414 414 414 1656 1656 1656 50% Step 502 502 502 2008 2008 2008 60% Step 590 590 590 2360 2360 2360 70% Step 677 677 677 2708 2708 2708

30、80% Step 765 765 765 3060 3060 3060 90% Step 852 852 852 3408 3408 3408 100% Step 940 940 940 3760 3760 3760 109% Step 1019 1019 1019 4076 4076 4076 Ramp See Figure 5 75% BT.709 Yellow 713 719 316 2852 2876 1264 75% BT.709 Cyan 538 709 718 2152 2836 2872 75% BT.709 Green 512 706 296 2048 2824 1184 7

31、5% BT.709 Magenta 651 286 705 2604 1144 2820 75% BT.709 Red 639 269 164 2556 1076 656 75% BT.709 Blue 227 147 702 908 588 2808 0% Black 64 64 64 256 256 256 2% Black 48 48 48 192 192 192 +2% Black 80 80 80 320 320 320 +4% Black 99 99 99 396 396 396 TABLE 3 Signal level for PQ narrow range 10 bits 12

32、 bits Image Area R G B R G B 100% White 940 940 940 3760 3760 3760 100% Yellow 940 940 64 3760 3760 256 100% Cyan 64 940 940 256 3760 3760 100% Green 64 940 64 256 3760 256 100% Magenta 940 64 940 3760 256 3760 100% Red 940 64 64 3760 256 256 100% Blue 64 64 940 256 256 3760 Rec. ITU-R BT.2111-0 7 T

33、ABLE 3 (end) 10 bits 12 bits Image Area R G B R G B 58% White 572 572 572 2288 2288 2288 58% Yellow 572 572 64 2288 2288 256 58% Cyan 64 572 572 256 2288 2288 58% Green 64 572 64 256 2288 256 58% Magenta 572 64 572 2288 256 2288 58% Red 572 64 64 2288 256 256 58% Blue 64 64 572 256 256 2288 40% Grey

34、 414 414 414 1656 1656 1656 7% Step 4 4 4 16 16 16 0% Step 64 64 64 256 256 256 10% Step 152 152 152 608 608 608 20% Step 239 239 239 956 956 956 30% Step 327 327 327 1308 1308 1308 40% Step 414 414 414 1656 1656 1656 50% Step 502 502 502 2008 2008 2008 60% Step 590 590 590 2360 2360 2360 70% Step 6

35、77 677 677 2708 2708 2708 80% Step 765 765 765 3060 3060 3060 90% Step 852 852 852 3408 3408 3408 100% Step 940 940 940 3760 3760 3760 109% Step 1019 1019 1019 4076 4076 4076 Ramp See Figure 5 58% BT.709 Yellow 568 571 381 2272 2284 1524 58% BT.709 Cyan 484 566 571 1936 2264 2284 58% BT.709 Green 47

36、4 564 368 1896 2256 1472 58% BT.709 Magenta 536 361 564 2144 1444 2256 58% BT.709 Red 530 350 256 2120 1400 1024 58% BT.709 Blue 317 236 562 1268 944 2248 0% Black 64 64 64 256 256 256 2% Black 48 48 48 192 192 192 +2% Black 80 80 80 320 320 320 +4% Black 99 99 99 396 396 396 8 Rec. ITU-R BT.2111-0

37、TABLE 4 Signal level for PQ full range 10 bits 12 bits Image Area R G B R G B 100% White 1023 1023 1023 4095 4095 4095 100% Yellow 1023 1023 0 4095 4095 0 100% Cyan 0 1023 1023 0 4095 4095 100% Green 0 1023 0 0 4095 0 100% Magenta 1023 0 1023 4095 0 4095 100% Red 1023 0 0 4095 0 0 100% Blue 0 0 1023

38、 0 0 4095 58% White 593 593 593 2375 2375 2375 58% Yellow 593 593 0 2375 2375 0 58% Cyan 0 593 593 0 2375 2375 58% Green 0 593 0 0 2375 0 58% Magenta 593 0 593 2375 0 2375 58% Red 593 0 0 2375 0 0 58% Blue 0 0 593 0 0 2375 40% Grey 409 409 409 1638 1638 1638 0% Step 0 0 0 0 0 0 10% Step 102 102 102

39、410 410 410 20% Step 205 205 205 819 819 819 30% Step 307 307 307 1229 1229 1229 40% Step 409 409 409 1638 1638 1638 50% Step 512 512 512 2048 2048 2048 60% Step 614 614 614 2457 2457 2457 70% Step 716 716 716 2867 2867 2867 80% Step 818 818 818 3276 3276 3276 90% Step 921 921 921 3686 3686 3686 100

40、% Step 1023 1023 1023 4095 4095 4095 Ramp See Figure 6 58% BT.709 Yellow 589 592 370 2356 2370 1480 58% BT.709 Cyan 491 586 592 1964 2345 2368 58% BT.709 Green 478 584 355 1915 2339 1420 58% BT.709 Magenta 551 347 584 2206 1389 2336 58% BT.709 Red 544 334 225 2178 1337 900 58% BT.709 Blue 296 201 58

41、2 1184 805 2328 0% Black 0 0 0 0 0 0 +2% Black 20 20 20 82 82 82 +4% Black 41 41 41 164 164 164 Rec. ITU-R BT.2111-0 9 FIGURE 5 HLG/PQ narrow range signal levels of the ramp BT . 21 11 -05ACEF1 0 1 9 (4 0 7 9 )H o r i z o n t a l p i x e l1 0 b i t s i g n a l l e v e l o fR , G a n d B ( 1 2 b i t

42、i n p a r e n t h e s i s )9 4 0 (3 7 6 0 ) 6 4 (2 5 6 ) 4 (1 6 ) DBTABLE 5 HLG/PQ Narrow Range Ramp width to 2K, 4K and 8K format Width (pixel) 2K 4K 8K A 1680 3360 6720 B 559 1118 2236 C 1015 2030 4060 D 106 212 424 E 60 120 240 F 936 1872 3744 10 Rec. ITU-R BT.2111-0 FIGURE 6 PQ full range signal

43、 levels of the ramp BT . 21 11 -06AC1 0 2 3 (4 0 7 5 )H o r i z o n t a l p i x e l1 0 b i t s i g n a l l e v e l o fR , G a n d B ( 1 2 b i t i n p a r e n t h e s i s )0 (0 ) DBTABLE 6 PQ Full Range Ramp width to 2K, 4K and 8K format Width (pixel) 2K 4K 8K A 1680 3360 6720 B 551 1102 2204 C 1023

44、2046 4092 D 106 212 424 Rec. ITU-R BT.2111-0 11 Attachment 1 (informative) Sections comprising the HLG test pattern FIGURE 7 BT . 21 11 -07(4 0 % )(7 5 % )(0 % )(7 5 % )(0 % )(0 % )(7 5 % )(4 0 % )(7 5 % co l o u r b ar s )(1 0 0 % co l o u r b ar s )( 2 % ) ( + 2 % ) ( + 4 % )BT . 7 0 9 co l o u r

45、b ar sR a m p ( 7 % - 1 0 9 % )S ta ir ( 7 % , 0 % , 1 0 % , 2 0 % , ., 9 0 % , 1 0 0 % , 1 0 9 % H L G )Colour Bars: The main colour bars are 75%HLG, with 100%HLG colour bars at the top. BT.709 Colour Bars: Generated by using the HLG OETF and a linear matrix. BT.709 colour bars are placed at the le

46、ft and right bottom to avoid overlaps with the main colour bars on a waveform monitor. Ramp: Levels are from 7%HLG to 109%HLG. 0% video level is at the left edge of the Green bar. Stair: Levels are from 7%HLG to 109%HLG. Left edge of the 0% step is at the left edge of the Yellow bar. 10% interval be

47、tween 0%HLG and 100%HLG. The width of each step is a half of the colour bar. The step signal and the ramp signal are placed not to overlap on a waveform monitor. Black signal: consisting of 0%, 2%, 0%, +2%, 0%, +4% and 0% video levels are placed at the lower left away from the bright areas for bette

48、r visibility. Grey bars (right and left): These areas may optionally be used to include other patterns for specific needs. 12 Rec. ITU-R BT.2111-0 Attachment 2 (informative) HLG waveform on a waveform monitor Figure 8 shows the HLG waveform of the test pattern on a waveform monitor. FIGURE 8 Waveform on waveform monitor (Red, Green, and Blue, respectively) BT . 21 11 -0801020304050607080901003840x2160/ 29. 97P RG B (444) 10bi t 3-B-D L Q U A D (25)G A I N 1 . 0 0 0 R G B