IEC 61966-9:2003

Multimedia systems and equipment - Colour measurement and management - Part 9: Digital cameras

IEC 61966-9:2003 defines methods of measurement designed to make possible the objective performance assessment and characterization of the colour reproduction of digital cameras which can capture colour still and moving images, and output colour information corresponding to red - green - blue digital image data. The measured results are intended to be used for the purpose of colour management in multimedia systems, typically in the Internet. This bilingual version (2013-03) corresponds to the monolingual English version, published in 2003-11. This second edition cancels and replaces the first edition published in 2000. It includes the following significant technical changes:
- In the light of issuing IEC 61966-2-2, the relevant reference IEC 61966-2-1 in Annex C has been replaced by IEC 61966-2-2 together with sRGB by scRGB.
- The previous Annex C has been replaced by the new Annex C where the previous Figure C.1 has been deleted.

Systèmes et appareils multimédia - Mesure et gestion de la couleur - Partie 9: Appareils numériques de prise de vue

La CEI 61966-9:2003 définit les méthodes de mesure pour permettre l'évaluation objective de la performance et la caractérisation de la reproduction des couleurs des appareils numériques de prise de vue qui peuvent prendre des images en couleur fixes et animées, et des informations de couleur en sortie correspondant aux données numériques d'images rouge, vert et bleu. Les résultats mesurés sont destinés à être utilisés pour la gestion de la couleur dans les systèmes multimédia, généralement sur Internet. Cette deuxième édition annule et remplace la première édition parue en 2000. Elle contient les modifications techniques significatives suivantes:
- Compte tenu de la publication de la CEI 61966-2-2, la référence correspondante, à la CEI 61966-2-1 de l'Annexe C, a été remplacé par CEI 61966-2-2 et sRVB par scRVB.
- L'ancienne Annexe C a été remplacée par la nouvelle Annexe C, dans laquelle l'ancienne Figure C.1 a été supprimée. La présente version bilingue (2013-03) correspond à la version anglaise monolingue publiée en 2003-11.

General Information

• Status: Published
• Publication Date: 18-Nov-2003
• ICS: 33.160.60 - Multimedia systems and teleconferencing equipment
• ICS: 35.040 - Information coding
• ICS: 37.040.01 - Photography in general
• Technical Committee: TC 100 - Audio, video and multimedia systems and equipment
• Current Stage: PPUB - Publication issued
• Start Date: 30-Jun-2004
• Completion Date: 19-Nov-2003

Relations

• Revises: IEC 61966-9:2000 - Multimedia systems and equipment - Colour measurement and management - Part 9: Digital cameras
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD
61966-9
Second edition
2003-11
Multimedia systems and equipment –
Colour measurement and management –
Part 9:
Digital cameras
Systèmes et appareils multimédia –
Mesure et gestion de la couleur –
Partie 9:
Appareils numériques de prise de vue
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
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edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
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INTERNATIONAL IEC
STANDARD
61966-9
Second edition
2003-11
Multimedia systems and equipment –
Colour measurement and management –
Part 9:
Digital cameras
Systèmes et appareils multimédia –
Mesure et gestion de la couleur –
Partie 9:
Appareils numériques de prise de vue
 IEC 2003  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
V
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – 61966-9  IEC:2003(E)
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references. 6
3 Terms and definitions. 7
4 Conditions. 7
4.1 Environmental conditions . 7
4.2 Conditions of measurements. 7
5 Measurement equipment . 9
5.1 Spectral light source . 9
5.2 Colour temperature conversion filter. 9
5.3 Dark box. 9
5.4 Test charts .11
5.5 Radiance meter .13
5.6 Spectro-radiometer .14
5.7 Luminance meter .14
6 Tone characteristics.14
6.1 Characteristics to be measured.14
6.2 Measurement conditions .14
6.3 Method of measurement .15
6.4 Presentation of results .15
7 Spectral responsivity characteristics.17
7.1 Characteristics to be measured.17
7.2 Measurement conditions .17
7.3 Method of measurement .17
7.4 Presentation of results .18
8 Spectral distribution of built-in electronic flash .19
8.1 Characteristics to be measured.19
8.2 Measurement conditions .19
8.3 Method of measurement .19
8.4 Presentation of results .20
9 Spatial non-uniformity .20
9.1 Characteristics to be measured.20
9.2 Measurement conditions .20
9.3 Method of measurement .20
9.4 Presentation of results .21
Annex A (normative) Letters and symbols .23
Annex B (informative) Procedure to calculate the inverse function.24
Annex C (informative) Example of the use of the reported results for colour management .25
Annex D (normative) Method to compensate spectral responsivity characteristics at the
neutral point .28
Annex E (informative) Automated extraction of data from the test chart image.29
Bibliography .31

61966-9  IEC:2003(E) – 3 –
Figure 1 – Equipment arrangement for measurements . 8
Figure 2 – Dark box.10
Figure 3 – Test chart 1 .11
Figure 4 – Test chart 2 with replaceable chip i .12
Figure 5 – Test chart 3 .12
Figure 6 – Example plot of tone characteristics (correlated colour temperature: 5 500 K).16
Figure 7 – Example of spectral responsivity characteristics (correlated colour
temperature: 5 500 K).19
Figure 8 – Example of the spectral distribution characteristics of a built-in electronic
flash.20
Figure 9 – Equipment arrangement for measurement of spatial non-uniformity .21
Figure C.1 – An example of spectral responsivity controlled to approximate the ideal
scRGB characteristics superimposed as the broken curves.27
Figure E.1 – Example to compare a typical optical viewfinder area and the
corresponding image sensible area (outer rectangle) .29
Figure E.2 – Test chart with extended orientation markers .29
Table 1 – Nominal reflectances of the grey-scale section and the grey chips .13
Table 2 – Example of tone characteristics (correlated colour temperature: 5 500 K) .16
Table 3 – An example of reporting form for spatial non-uniformity .22

– 4 – 61966-9  IEC:2003(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MULTIMEDIA SYSTEMS AND EQUIPMENT –
COLOUR MEASUREMENT AND MANAGEMENT –
Part 9: Digital cameras
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
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agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61966-9 has been prepared by IEC technical committee 100: Audio,
video and multimedia systems and equipment.
This second edition cancels and replaces the first edition published in 2000. This edition
includes the following significant technical changes from the previous edition.
a) In the light of issuing IEC 61966-2-2, the relevant reference IEC 61966-2-1 in Annex C has
been replaced by IEC 61966-2-2 together with sRGB by scRGB.
b) The previous Annex C has been replaced by the new Annex C where the previous Figure
C.1 has been deleted.
61966-9  IEC:2003(E) – 5 –
The text of this standard was submitted to the national committees for voting under the Fast
Track Procedure as the following documents:
CDV Report on voting
100/666/CDV 100/722/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
IEC 61966 consists of the following parts, under the general title Multimedia systems and
equi
...

IEC 61966-9 ®
Edition 2.0 2003-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Multimedia systems and equipment – Colour measurement and management –
Part 9: Digital cameras
Systèmes et appareils multimédia – Mesure et gestion de la couleur –
Partie 9: Appareils numériques de prise de vue

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IEC 61966-9 ®
Edition 2.0 2003-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Multimedia systems and equipment – Colour measurement and management –

Part 9: Digital cameras
Systèmes et appareils multimédia – Mesure et gestion de la couleur –

Partie 9: Appareils numériques de prise de vue

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 33.160.60; 35.040; 37.040 ISBN 978-2-83220-607-2

– 2 – 61966-9  IEC:2003
CONTENTS
FOREWORD . 4

1 Scope . 6
2 Normative references. 6
3 Terms and definitions . 7
4 Conditions . 7
4.1 Environmental conditions . 7
4.2 Conditions of measurements . 7
5 Measurement equipment . 9
5.1 Spectral light source . 9
5.2 Colour temperature conversion filter . 9
5.3 Dark box . 9
5.4 Test charts . 11
5.5 Radiance meter . 13
5.6 Spectro-radiometer . 14
5.7 Luminance meter . 14
6 Tone characteristics . 14
6.1 Characteristics to be measured . 14
6.2 Measurement conditions . 14
6.3 Method of measurement . 15
6.4 Presentation of results . 15
7 Spectral responsivity characteristics. 17
7.1 Characteristics to be measured . 17
7.2 Measurement conditions . 17
7.3 Method of measurement . 17
7.4 Presentation of results . 18
8 Spectral distribution of built-in electronic flash . 19
8.1 Characteristics to be measured . 19
8.2 Measurement conditions . 19
8.3 Method of measurement . 19
8.4 Presentation of results . 20
9 Spatial non-uniformity . 20
9.1 Characteristics to be measured . 20
9.2 Measurement conditions . 20
9.3 Method of measurement . 20
9.4 Presentation of results . 21

Annex A (normative) Letters and symbols . 23
Annex B (informative) Procedure to calculate the inverse function . 24
Annex C (informative) Example of the use of the reported results for colour management . 25
Annex D (normative) Method to compensate spectral responsivity characteristics at the
neutral point . 28
Annex E (informative) Automated extraction of data from the test chart image . 29

Bibliography . 31

61966-9  IEC:2003 – 3 –
Figure 1 – Equipment arrangement for measurements . 8
Figure 2 – Dark box. 10
Figure 3 – Test chart 1 . 11
Figure 4 – Test chart 2 with replaceable chip i . 12
Figure 5 – Test chart 3 . 12
Figure 6 – Example plot of tone characteristics (correlated colour temperature: 5 500 K) . 16
Figure 7 – Example of spectral responsivity characteristics (correlated colour
temperature: 5 500 K) . 19
Figure 8 – Example of the spectral distribution characteristics of a built-in electronic
flash . 20
Figure 9 – Equipment arrangement for measurement of spatial non-uniformity . 21
Figure C.1 – An example of spectral responsivity controlled to approximate the ideal
scRGB characteristics superimposed as the broken curves . 27
Figure E.1 – Example to compare a typical optical viewfinder area and the
corresponding image sensible area (outer rectangle) . 29
Figure E.2 – Test chart with extended orientation markers . 29

Table 1 – Nominal reflectances of the grey-scale section and the grey chips . 13
Table 2 – Example of tone characteristics (correlated colour temperature: 5 500 K) . 16
Table 3 – An example of reporting form for spatial non-uniformity . 22

– 4 – 61966-9  IEC:2003
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MULTIMEDIA SYSTEMS AND EQUIPMENT –
COLOUR MEASUREMENT AND MANAGEMENT –

Part 9: Digital cameras
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for t
...