Policy on Intellectual Property Right (IPR)
�1���� Introduction
�2���� Reference levels and signal format
������� 2.1��� �HDR Reference White
������� 2.2���� Signal levels for line-up in production
������� 2.3���� Bit depth
������� 2.4���� Signal range
������� 2.5���� Colour representation
�3���� Monitoring
������� 3.1���� Display of PQ signals
����������������� 3.1.1���� Mapping to displays with limited luminance range
������� 3.2���� Display of HLG signals
����������������� 3.2.1���� Display of HLG signals on SDR screens
�4���� Image brightness
������� 4.1���� Comfortable brightness of static images
������� 4.2���� Tolerance to programme brightness shifts
�5���� Inclusion of standard dynamic range content
������� 5.1���� Display referred mapping
����������������� 5.1.1��� �Display referred mapping of SDR into PQ
����������������� 5.1.2���� Display referred mapping of SDR into HLG
������� 5.2� ���Scene referred mapping
����������������� 5.2.1���� Scene referred mapping of SDR into HLG
������� 5.3���� Handling negative values in format conversion
������� 5.4���� Adjustments to BT.709 cameras
������� 5.5���� Use of 8-bit content
������� 5.6���� Mapping of SDR graphics
�6���� Conversion between PQ and HLG
������� 6.1���� Transcoding concepts
������� 6.2���� Conversion concepts using a reference condition at 1 000 cd/m2
������� 6.3���� Cameras using a common OOTF at a reference peak luminance of 1
000 cd/m2
������� 6.4���� Handling PQ signals with greater than 1 000 cd/m2
peak luminance
������� 6.5���� Possible colour differences when converting from PQ to HLG
�7���� Transitioning from SDR BT.709 to HDR BT.2100 production
������� 7.1���� HDR focused production
������� 7.2���� SDR focused production
����� ������������7.2.1���� PQ production
����������������� 7.2.2���� HLG production
��� ����7.3���� SDR-HDR and HDR-SDR format conversion
����������������� 7.3.1���� PQ conversion
����������������� 7.3.2���� HLG conversion
����������������� 7.3.3���� The displayed �look� of content following format
conversion
����������������� 7.3.4���� Signal range considerations for HDR to SDR
conversion
������� 7.4���� SDR-HDR-SDR �Round-Tripping�
������� 7.5���� Hardware colour matrix compensation
������� 7.6���� Signal line-up
������� 7.7���� Camera painting
�8���� Conversion practices for camera and display RGB colorimetry
Annex 1� Study to evaluate levels for PQ content
Annex 2� Analysis of reference levels
������ A2.1���� Introduction
������ A2.2���� Analysis of reference levels
������ A2.3���� Diffuse white elements in live HLG encoded broadcast content
������ A2.4���� Diffuse white in an HDR dataset of 1 000 cd/m2 PQ
encoded images
������ A2.5���� Discussion
������ A2.6���� Conclusions
Annex 3� Two studies of skin tones, using a reflectance database and using real
subjects
������ A3.1���� Study 1: using a skin tone database and an ideal model of a
camera
������ A3.2���� Study 2: using human subjects and a RAW recording camera
������ A3.3���� Conclusions
Annex 4� Study of facial skin tones in broadcast content
������ A4.1���� Facial skin tones in SDR news and information programmes in
studio
������ A4.2���� Comparison of facial skin tones in HLG HDR and SDR content in a
music programme
������ A4.3���� Conclusion
Annex 5� Displaying PQ � calculating the EETF
Annex 6� Comparison of the native looks of HDR and SDR production
������ A6.1���� Differences in chromaticity and saturation
������ A6.2���� Quantifying the total colour differences
������ A6.3���� Comparison with the reference colour pattern data
Annex 7� Calculating the normalized primary matrix
������ A7.1���� Conversion of normalized linear colour signals to
Recommendation ITU‑R BT.2100
������ A7.2���� Conversion of BT.2100 to arbitrary linear colour signals for
display systems
Annex 8� 4K/8K UHD HDR and HD SDR simul-production and simulcast practice� in
China
������ A8.1���� Background
������ A8.2���� Basic workflows and principles
������ A8.3��� �Introduction of related work and research
������ A8.4���� Mapping for conversion between HDR and SDR
������ A8.5���� Parameter settings
������ A8.6���� Converter performance consistency (LUTs usage)
������ A8.7���� Signal range
����� A8.8 �����Consistency of international exchange
������ A8.9���� Conclusions
References
Glossary