ITU-R BT 814-3-2017 Specifications of PLUGE test signals and alignment procedures for setting of brightness and contrast of displays.pdf
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1、 Recommendation ITU-R BT.814-3 (12/2017) Specifications of PLUGE test signals and alignment procedures for setting of brightness and contrast of displays BT Series Broadcasting service (television) ii Rec. ITU-R BT.814-3 Foreword The role of the Radiocommunication Sector is to ensure the rational, e
2、quitable, efficient and economical 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 Radiocommunica
3、tion Sector are performed by 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 Resolu
4、tion ITU-R 1. Forms to be used 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 da
5、tabase can also be found. Series 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
6、 service M Mobile, radiodetermination, 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 S
7、M Spectrum management SNG Satellite 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 r
8、eserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R BT.814-3 1 RECOMMENDATION ITU-R BT.814-3 Specifications of PLUGE test signals and alignment procedures for setting of brightness and contrast of displays (1992-1994-2007-201
9、7) Scope This Recommendation defines test signals and alignment procedures for the adjustment of displays used for programme production and monitoring. The signal may be used to set displayed image values for standard definition television, high definition television and ultra high definition televi
10、sion including the PQ and HLG high dynamic range television systems. Keywords PLUGE, display adjustment, HDR, HDR-TV, brightness, contrast The ITU Radiocommunication Assembly, considering a) that precision picture monitors are used in a variety of applications including subjective laboratory testing
11、 and control room monitoring of operational systems; b) that variations in the set-up and adjustment of displays may lead to variations in displayed pictures; c) that special signals that assist with the set-up and adjustment of monitors have been developed and have been in operational use for many
12、years, recommends 1 that the PLUGE test signal (see Note 1) described in Annex 1 should be used for setting of displays used for subjective assessments, and for operational monitoring of systems described in Recommendations ITU-R BT.17001 and ITU-R BT.6012; 2 that the PLUGE test signal described in
13、Annex 2 should be used for setting of displays used for subjective assessments, and for operational monitoring of systems described in Recommendations ITU-R BT.7093, ITU-R BT.20204 and ITU-R BT.21005; 1 Recommendation ITU-R BT.1700 Characteristics of composite video signals for conventional analogue
14、 television systems. 2 Recommendation ITU-R BT.601 Studio encoding parameters of digital television for standard 4:3 and wide-screen 16:9 aspect ratios. 3 Recommendation ITU-R BT.709 Parameter values for the HDTV standards for production and international programme exchange. 4 Recommendation ITU-R B
15、T.2020 Parameter values for ultra-high definition television systems for production and international programme exchange. 5 Recommendation ITU-R BT.2100 Image parameter values for high dynamic range television for use in production and international programme exchange. 2 Rec. ITU-R BT.814-3 3 that t
16、he procedure to be followed for the use of the PLUGE test signal should be as described in Annex 3, further recommends that further studies on methods for black level adjustment of HDR displays be conducted and that informative Annexes 4 and 5 of this Recommendation be updated to reflect improved me
17、thods. NOTE 1 The acronym, PLUGE, was originally derived from “Picture Line Up Generating Equipment”. Annex 1 (Normative) Specifications of PLUGE signal for SDTV The PLUGE signal (see Fig. 1) is composed of: a) three closely spaced narrow vertical stripes on the left-hand side of the picture. The ce
18、ntral vertical stripe is at waveform black level. The left-hand stripe is slightly darker, and the right-hand stripe is slightly lighter than the central stripe; b) a broad bar signal located on the right-hand side of the picture. It is divided into four areas, one at white level and the other three
19、 at descending grey levels. This grey scale is in approximately equal steps, as seen by eye, over a contrast range of 30:1. The peak white area is sufficiently large to enable the peak luminance to be set by a measuring instrument; c) a uniform background surrounding the vertical stripes and the bro
20、ad bar described above. Two different levels for this background are specified according to the application: for operational monitoring the background level is set to signal black level; for subjective assessments the background level is set to the grey level shown in Table 1. This background level
21、has been optimized to give a picture display of subjective quality similar to that used in sequences used in subjective assessment. Rec. ITU-R BT.814-3 3 FIGURE 1 PLUGE active field and waveform To take account of the characteristics of the human eye, the luminance specified for the vertical stripes
22、 described in c) is slightly different for the two applications (see Table 1). To ensure that in analogue composite systems the colour decoder of a display is working in its colour mode, it is recommended that a standard colour burst is included in the analogue waveform. The horizontal sample count
23、is less than the 720 horizontal samples defined in Recommendation ITU-R BT.601. The PLUGE signal should be centred within the active line of digital and analogue systems 2 samples. 4 Rec. ITU-R BT.814-3 TABLE 1 Levels of waveform Operational monitoring Subjective assessment monitoring % Level mV dig
24、ital % Level mV digital 625-line 525-line 625-line 525-line A black level 0% 0 mV (16)64 0% 0 mV (16)64 7.5% 54 mV (16)64 0% 0 mV (16)64 0% 0 mV (16)64 7.5% 54 mV (16)64 B white level 100% 700 mV (235)940 100% 714 mV (235)940 100% 714 mV (235)940 100% 700 mV (235)940 100% 714 mV (235)940 100% 714 mV
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