Report ITU-R BT.2525-0 - A method of skin tone analysis for programme production - ITU-R publication

Oct 13, 2026

Report ITU-R BT.2525-0 proposes a skin tone evaluation method for programme production using the Jzazbz colour space. It describes how the approach verifies skin tone luminance, hue and saturation ranges for Fitzpatrick Scale skin types 1-4, supporting more precise control than traditional waveform/vector-based tools. The report outlines an analysis workflow, including range determination and verification, then applies results to programme quality assessment, pre-shooting, and post-production.

LanguageEnglish

CategoryGeneral

FormatPDF

Pages17

Reading Time6 min

AccessFree to download

Introduction to Test

Analysis tool

Range determination

Range verification

Application

Programme quality assessment

Pre-shooting

Post-production

Conclusion

Annex 1 Colour gamut selection

Annex 2 Calculation of hue, saturation and lightness values

References

Report ITU-R BT.2525-0 (09/2023) BT Series: Broadcasting service (television) A method of skin tone analysis for programme production Foreword The role of the Radiocommunication Sector is to ensure the rational, equitable, efficient and economical use of the radiofrequency 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 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 Resolution 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](http://www.itu.int/ITU-R/go/patents/en where)[ where](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. | Series of ITU-R Reports
(Also available online at [https://www.itu.int/publ/R-REP/en](https://www.itu.int/publ/R-REP/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
M
P
RA
RS
S
SA
SF
SM
TF | Fixed service
Mobile, radiodetermination, amateur and related satellite services
Radiowave propagation
Radio astronomy
Remote sensing systems
Fixed-satellite service
Space applications and meteorology
Frequency sharing and coordination between fixed-satellite and fixed service systems Spectrum management
Time signals and frequency standards emissions | Note: This ITU-R Report was approved in English by the Study Group under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2023 © ITU 2023 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. REPORT ITU-R BT.2525-0 A method of skin tone analysis for programme production (2023) TABLE OF CONTENTS Page Report ITU-R BT.2525-0......................................................................................................... 1 Policy on Intellectual Property Right (IPR) ............................................................................. ii 1 Introduction to Test ........................................................................................................ 2 1.1 Analysis tool ....................................................................................................... 2 1.2 Range determination ........................................................................................... 4 1.3 Range verification............................................................................................... 7 2 Application ..................................................................................................................... 11 2.1 Programme quality assessment ........................................................................... 11 2.2 Pre-shooting ........................................................................................................ 11 2.3 Post-production ................................................................................................... 12 3 Conclusion ...................................................................................................................... 12 Annex 1 Colour gamut selection............................................................................................. 13 Annex 2 Calculation of hue,

FAQs

What colour space does the method use to evaluate skin tone?

The report introduces a skin tone evaluation method based on the Jzazbz colour space.

Which skin types are covered by the verified ranges?

The method verifies skin tone luminance, hue and saturation ranges for Fitzpatrick Scale skin type 1-4.

How is the method intended to be used during production?

The report applies the verified ranges to programme quality assessment, as well as pre-shooting and post-production processes.

Oct 13, 2026

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