1、BRITISH STANDARD BS EN 61966-9:2004 Multimedia systems and equipment Colour measurement and management Part 9: Digital cameras The European Standard EN 61966-9:2004 has the status of a British Standard ICS 33.160.60; 35.040; 37.040 BS EN 61966-9:2004 This British Standard was published under the aut
2、hority of the Standards Policy and Strategy Committee on 28 January 2005 BSI 28 January 2005 ISBN 0 580 45329 4 National foreword This British Standard is the official English language version of EN 61966-9:2004. It is identical with IEC 61966-9:2003. It supersedes BS EN 61966-9:2001 which is withdr
3、awn. The UK participation in its preparation was entrusted to Technical Committee EPL/100, Audio, visual and multimedia systems and equipment, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The Brit
4、ish Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Onl
5、ine. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsi
6、ble international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover,
7、 the EN title page, pages 2 to 31 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 61966-9 NORME EUROPENNE EUROPISCHE NORM October 2004 CENELEC European Co
8、mmittee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENEL
9、EC members. Ref. No. EN 61966-9:2004 E ICS 33.160.60; 35.040; 37.040 Supersedes EN 61966-9:2000English version Multimedia systems and equipment Colour measurement and management Part 9: Digital cameras (IEC 61966-9:2003) Systmes et appareils multimedia - Mesure et gestion de la couleur Partie 9: App
10、areils numriques de prise de vue (CEI 61966-9:2003) Multimediasysteme und -gerte - Farbmessung und Farbmanagement Teil 9: Digitale Kameras (IEC 61966-9:2003) This European Standard was approved by CENELEC on 2004-09-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations wh
11、ich stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This Europea
12、n Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the
13、 national electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and Uni
14、ted Kingdom. Foreword The text of the International Standard IEC 61966-9:2003, prepared by IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the formal vote and was approved by CENELEC as EN 61966-9 on 2004-09-01 without any modification. This European Standard supersed
15、es EN 61966-9:2000. The European Standard includes the following significant technical changes from EN 61966-9:2000: a) in the light of issuing EN 61966-2-2, the relevant reference to EN 61966-2-1 in Annex C has been replaced by EN 61966-2-2 together with sRGB by scRGB; b) Annex C has been replaced
16、and Figure C.1 has been deleted. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2005-09-01 latest date by which the national standards conflicting with the EN have to be with
17、drawn (dow) 2007-09-01 _ Endorsement notice The text of the International Standard IEC 61966-9:2003 was approved by CENELEC as a European Standard without any modification. _ Page2 EN619669:2004CONTENTS OFWERODR 4 1 Scope 5 2 Normative references.5 3 Terms and definitions. 6 4 Conditions6 4.1 Enviro
18、nmental conditions 6 4.2 Conditions of measurements 6 5 Measurement equipment8 5.1 Spectral light source .8 5.2 Colour temperature conversion filter8 5.3 Dark box.8 5.4 Test charts 10 5.5 Radiance meter .12 5.6 Spectro-radiometer 13 5.7 Luminance meter .13 6 Tone characteristics13 6.1 Characteristic
19、s to be measured13 6.2 Measurement conditions 13 6.3 Method of measurement 14 6.4 Presentation of results .14 7 Spectral responsivity characteristics16 7.1 Characteristics to be measured16 7.2 Measurement conditions 16 7.3 Method of measurement 16 7.4 Presentation of results .17 8 Spectral distribut
20、ion of built-in electronic flash.18 8.1 Characteristics to be measured18 8.2 Measurement conditions 18 8.3 Method of measurement 18 8.4 Presentation of results .19 9 Spatial non-uniformity .19 9.1 Characteristics to be measured19 9.2 Measurement conditions 19 9.3 Method of measurement 19 9.4 Present
21、ation of results .20 Annex A (normative) Letters and symbols .22 Annex B (informative) Procedure to calculate the inverse function.23 Annex C (informative) Example of the use of the reported results for colour management .24 Annex D (normative) Method to compensate spectral responsivity characterist
22、ics at the neutral point 27 Annex E (informative) Automated extraction of data from the test chart image.28 Bibliography 31 Page3 EN619669:2004 TNOCENTS FOREWORD 4 1 Scepo 5 2 Normaitve referneces.5 3 Terms ed dnafnoitinis. 6 4 Cnoitidnos6 1.4 Eivnrnomlatne csnoitidno 6 2.4 Csnoitidno fo maesuremtne
23、s 6 5 Maesurempiuqe tnemnet8 1.5 Sepctrthgil la suorce .8 2.5 Cruolo etmeprutare cnoversino fetlir8 3.5 Dark obx.8 4.5 Test cahrst 01 5.5 Rnaidace meret .21 6.5 Sepctror-oidamrete 31 7.5 uLmnanice meret .31 6 Teno cahracetrisitcs31 1.6 Cahracetrisitcs eb ot maesured31 2.6 Maesuremtne csnoitidno 31 3
24、.6 Mfo dohte maesuremtne 41 4.6 Presfo noitatne resustl .41 7 Sepctrla resnopsytivi cahracetrisitcs61 1.7 Cahracetrisitcs eb ot maesured61 2.7 Maesuremtne csnoitidno 61 3.7 Mfo dohte maesuremtne 61 4.7 Presfo noitatne resustl .71 8 Sepctrid lastrifo noitub tliub-iele nctrcino flash.81 1.8 Cahracetri
25、sitcs eb ot maesured81 2.8 Maesuremtne csnoitidno 81 3.8 Mfo dohte maesuremtne 81 4.8 Presfo noitatne resustl .81 9 Snon laitap-inuformyti .91 1.9 Cahracetrisitcs eb ot maesured91 2.9 Maesuremtne csnoitidno 91 3.9 Mfo dohte maesuremtne 91 4.9 Presfo noitatne resustl .02 xennA A (onrma)evit etteLrs d
26、na symslob .22 xennA B (inform)evita Procuderot e clacevni eht etalurse fnucoitn.32 xennA C (inform)evita Examfo elp u ehtsfo e eht roperdet resstlu fro cruolo meganamtne .42 xennA ( Dronm)evita c ot dohteMmosneps etaceprtr lasesnopytivi crahcaretistcis eht ta tuenratniop l 72 xennA E (inform)evita
27、otuAme detaxtracfo noit atad frmo et ehtst cahri tm.ega82 Bibliography 31 3egaP 4002:966916NE Annex ZA (normative) Normative references to international publications with their corresponding European publications . 30Figure 1 Equipment arrangement for measurements 7 Figure 2 Dark box. 9 Figure 3 Tes
28、t chart 1 10 Figure 4 Test chart 2 with replaceable chip i .11 Figure 5 Test chart 3 11 Figure 6 Example plot of tone characteristics (correlated colour temperature: 5 500 K)15 Figure 7 Example of spectral responsivity characteristics (correlated colour temperature: 5 500 K)18 Figure 8 Example of th
29、e spectral distribution characteristics of a built-in electronic flash19 Figure 9 Equipment arrangement for measurement of spatial non-uniformity.20 Figure C.1 An example of spectral responsivity controlled to approximate the ideal scRGB characteristics superimposed as the broken curves26 Figure E.1
30、 Example to compare a typical optical viewfinder area and the corresponding image sensible area (outer rectangle) .28 Figure E.2 Test chart with extended orientation markers .28 Table 1 Nominal reflectances of the grey-scale section and the grey chips 12 Table 2 Example of tone characteristics (corr
31、elated colour temperature: 5 500 K) .15 Table 3 An example of reporting form for spatial non-uniformity 21 Page4 EN619669:2004MULTIMEDIA SYSTEMS AND EQUIPMENT COLOUR MEASUREMENT AND MANAGEMENT Part 9: Digital cameras 1 Scope This part of IEC 61966 is applicable to the assessment of colour reproducti
32、on of digital cameras used in open computer systems and similar applications. A series of methods and parameters for colour measurements and management for use in multimedia systems and equipment is applicable to the assessment of colour reproduction. This standard deals with digital cameras to capt
33、ure colour still images and moving images for use in multimedia applications. The methods of measurement standardized in this standard are designed to make possible the objective performance assessment and characterization of the colour reproduction of digital cameras which can capture colour still
34、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 standard defines test charts, measurement conditions and metho
35、ds of measurement, so as to make possible the colour management in open multimedia systems and comprehensive comparison of the results of measurements for assessment of digital cameras. Colour control within digital cameras is outwith the scope of this part. It does not specify limiting values for v
36、arious parameters. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 600
37、50(845):1987, International Electrotechnical Vocabulary (IEV) Chapter 845: Lighting. IEC 61146-1:1994, Video cameras (PAL/SECAM/NTSC) Methods of measurement Part 1: Non-broadcast single-sensor cameras IEC 61966-2-1:1999, Multimedia systems and equipment Colour measurement and management Part 2-1: Co
38、lour management Default RGB colour space sRGB ISO 2813:1994, Paints and varnishes Determination of specular gloss of non-metallic paint films at 20 degrees, 60 degrees and 85 degrees ISO/CIE 10527:1991, CIE standard colorimetric observers CIE 17.4:1987, International lighting vocabulary Page5 EN6196
39、69:20043 Terms and definitions For the purposes of this document, the definitions in IEC 60050-845 and CIE 17.4, as well as the following definitions, apply. 3.1 colour control conversion of equipment-dependent colour-image data to equipment-independent data for a specific colour space including ton
40、e characteristics 3.2 digital camera electronic imaging equipment which can capture colour still and moving images, and outputs digital image data for red green blue channels either by itself or using incorporated colour control software 4 Conditions 4.1 Environmental conditions All measurements spe
41、cified in this standard shall be carried out in a dark room. Electric power to a digital camera under test shall be supplied using an a.c. adapter or batteries recommended by the manufacturer. The mains voltage and frequency applied to the a.c. adapter shall be at the rated value specified by the ma
42、nufacturer of the digital camera. When the mains voltage fluctuates, a stabilizer shall be used to attain a stability value of 5 % of the rated value. Other environmental conditions such as temperature and relative humidity shall be reported, together with the results of measurement. For additional
43、environmental conditions not specified in this subclause, if any, the speci- fications of the manufacturer of the digital camera shall be taken into account. 4.2 Conditions of measurements 4.2.1 Measurement arrangement Unless otherwise specified, a shooting object shall be a test chart with the dark
44、 box shown in Figure 1. The specifications for the centre hole of the chart are given in Figure 3. Relative positions shall be selected to prevent unnecessary glare from the diffuser. NOTE The spectral light source consisting of the lamp, the iris, the monochromator, the optical fibre and the diffus
45、er may be configured in other ways, provided that the required specifications are met. Page6 EN619669:2004Auxiliary lamp Colour temperature conversion filter Digital camera under test Main lamp T est chart 1 Monochromator Spectral light source Optical fibre Lamp Iris Main lamp Dark box Diffuser Hole
46、 Figure 1 Equipment arrangement for measurements 4.2.2 Illumination Illumination of the test charts shall be performed by two or four main lamps and one auxiliary lamp depending on the characteristics to be measured. Incident lights from the main lamps shall be 45 relative to the surface of the test
47、 chart. An auxiliary lamp to illuminate the diffuser in Figure 1 is used only for the measurement specified in Clause 7. The diffuser shall not be directly illuminated by the main lamps. The main lamps and the auxiliary lamp shall be halogen lamps with a well-regulated power supply. The correlated c
48、olour temperature of the lamps shall be 3 100 K 100 K as specified in IEC 61146-1. The non-uniformity of illumination shall be less than 5 %. The average illuminance on the test chart shall be 2 000 lx 100 lx. 4.2.3 Shooting conditions The optical axis of the digital camera under test shall coincide
49、 with the normal to the test chart. If the digital camera under test is equipped with a zoom lens, the distance between the test chart and the digital camera under test, unless otherwise specified, shall be approximately 1,5 m. The zooming shall be adjusted so that the horizontal and vertical markers fit within the full frame of an image area. If the digital camera under test is not equipped with
