1、STD-BSI BS EN bLL4b-2-ENGL 1997 Lb24bb7 Obb7784 53T BRITISH STANDARD Video cameras (PAUSECAIWNTSC) - Methods of measurement Part 2. *o- and three-sensor professional cameras * * Kn The European Standard EN 611462 : 1997 has the status of a British Standard ICs 33.160.40 BS EN 61146-2 : 1997 IEC 6114
2、6-2 : 1997 - STD-BSI BS EN b114b-2-ENGL 1997 W lb2qbb9 Obb7785 47b been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 December 1997 Amd. No. O BSI 1997 ISBN O 5sO 28871 4 _- BS EN 61146-2 : 1997
3、 Date Text affected _-_. - _ . I_- _I National foreword This British Standard is the English language veision of EN 611462 : 1997. It is identical with IEC 611482 : 1997. The UK participation in its preparation was entrusted by Technical Coinmittee EPU100, Audio, video and multimedia systems and equ
4、ipment, to Subcommitter EPUlOB, Equipment and systems in the field of audio, video and audovjsuai engineering, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible international/European committee MY enquiries on the interpretation, or proposals for c
5、hange, and keep the UK interests informed; - monitor related international and European developments and promulgatc them in the UK IEC 61146 consjsts of the following parts Part 1: Non-broadcast singlesensor meras Part 2 Two- and threesensor professional cameras Part 3 Non-broadcast camera-recorders
6、 Part 4 Automatic functions of video cameras and mera recorders A list of organizatons represented on this subcommittee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 6OOOO added to the old number. For instance, IEC 27-1 has been renumbered as
7、IEC 60027-i. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards norniaily includc an annex which lists normative references to inter
8、national publications with their corresponding European publications. The British Standards which implement tlicsc international or European publications may be found in the BSI Standards Catalogue under the section entitied International Standards Correspondence Index, or by using the Find facility
9、 of the BSI Standards Electronic Catalogue. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 50, an inside back cover and a back cover. STD-BSI BS
10、 EN b114b-2-ENGL 1997 m lbZLlbb9 Obb778b 302 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61 146-2 October 1997 ICs 33.1 60.40 Descriptors: Video recording, recording apparatus, video cameras, performance evaluation, measurements, test results, comparison, sensitivity, Signal to noise ration
11、, resolution, colour, luminance, distorsion, test chan English version Video cameras (PAL/SECAM/NTSC) - Methods of measurement Part 2: Two- and three-sensor professional cameras (IEC 61 146-21997) Camras vido (PAL/SECAM/NTSC) Mthodes de mesure Partie 2: Camras professionnelles deux et trois capteurs
12、 - (CE1 61 146-2: 1997) m - Videokameras (PAL/SECAM/NTSC) Meverfa hren Teil 2: Zwei- und Drei-Sensorkameras fr professionelle Anwendung (IEC 61 146-21997) * vi * This European Standard was approved by CENELEC on 1997-1 0-01. CENELEC members are bound to comply with the CENXENELEC Internal Regulation
13、s which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Upto-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member. This Euro
14、pean 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
15、the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de
16、 Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 1997 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61 146-2:1997 E Page 2 EN 61146-2 : 1
17、997 Foreword The text of document 100C/59/FDIS, future edition 1 of IEC 61 146-2, prepared by SC 1 OOC, Audio, video and multimedia subsystems and equipment, of IEC TC 100, Audio, video and multimedia systems and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC a
18、s EN 61 146-2 on 1997-10-01. 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) 1998-07-0 1 - latest date by which the national standards conflicting with the EN have to be wit
19、hdrawn (dow) 1998-07-01 Annexes designated “normative“ are part of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annex ZA is normative and annex A is informative. Annex ZA has been added by CENELEC. Endorsement notice The text of the Int
20、ernational Standard IEC 61 146-2: 1997 was approved by CENELEC as a European Standard without any modification. STD.BSI BS EN bLL4b-Z-ENGL 1777 Lb2qbb9 Obb7788 185 = 7 . e * * rn Clause Page 3 EN 61146-2 : 1997 CONTENTS 1 General . 1.1 Scope 1.2 Normative references . 1.3 Conditions . 1.3.1 Environm
21、ental conditions . 1.3.2 Conditions of measurements 1.3.3 Reference output levels 2 Video characteristics . 2.1 Sensitivity 2.1.1 Reference subject illumination 2.1.2 Reference sensitivity (alternative method) 2.1.3 Minimum subject illumination 2.2 Resolution . 2.2.1 Modulation depth 2.2.2 Common re
22、solution 2.3 Signal-to-noise ratio . 2.3.1 Characteristics to be specified 2.3.2 Measurement conditions 2.3.3 Method of measurement . 2.3.4 Presentation of results . 2.4 Waveform distortions (streaking) 2.4.1 Characteristics to be specified 2.4.2 Measurement conditions 2.4.3 Method of measurement .
23、2.4.4 Presentation of results . Gamma and white balance tracking characteristics . 2.5.1 Characteristics to be specified 2.5.2 Measurement conditions 2.5.3 Method of measurement . 2.5.4 Presentation of results . Colour and white reproduction non-uniformity . 2.6.1 Characteristics to be specified 2.6
24、.2 Measurement conditions 2.6.3 Method of measurement . 2.6.4 Presentation of results . 2.5 2.6 . rl Page 7 7 7 8 8 8 9 10 10 10 12 13 14 14 16 16 16 17 18 19 19 19 19 21 21 21 21 22 22 23 23 23 23 23 24 O BSI 1997 STD-BSI BS EN bLL4b-Z-ENGL I777 D Lb2qbb7 Obb7787 OLL Page 4 EN 61146-2 : 1997 2.7 Tr
25、acking error of white shading 2.7.1 Characteristics to be specified 2.7.2 Measurement conditions 2.7.3 Method of measurement . 2.7.4 Presentation of results . 2.8 Black shading 2.8.1 Characteristics to be specified 2.8.2 Measurement conditions 2.8.3 Method of measurement . 2.8.4 Presentation of resu
26、lts . 2.9 White clipping and compression rate . 2.9.1 Characteristics to be specified 2.9.2 Measurement conditions 2.9.3 Method of measurement . 2.9.4 Presentation of results . 2.1 O Dynamic range and contrast range . 2.10.1 Characteristics to be specified 2.10.2 Method of measurement 2.10.3 Present
27、ation of results . 2.1 1 ColOur reproduction . 2.1 1.1 Characteristics to be specified 2.1 1.2 Measurement conditions 2.1 1.3 Method of measurement . 2.1 1.4 Calculation 2.1 1.6 Presentation of results . 2.1 1.5 Original colour chip samples 2.1 1.7 Camera for which only a composite video signal is a
28、vailable . 2.12 Flare 2.12.1 Characteristics to be specified 2.12.2 Measurement conditions 2.12.3 Method of measurement . 2.12.4 Presentation of results . 3 Other anomalies 3.1 Moires . 3.1.1 For a camera which provides R, G, B outputs 3.1.2 For a camera which provides composite video output only 3.
29、2 Lag 3.2.1 Measurement conditions . 3.2.2 Method of measurement . 3.2.3 Presentation of results . 3.3.1 Measurement conditions 3.3.2 Method of measurement . 3.3.3 Presentation of results . 3.4 Blooming . 3.4.1 Method of measurement . 3.3 Sticking (image retention) 3.4.2 Presentation of results . rn
30、 24 24 24 25 27 27 27 27 27 27 27 27 28 28 28 28 28 28 29 29 29 29 32 32 34 34 34 34 35 35 36 36 36 36 36 37 37 37 37 37 37 37 39 37 38 38 38 Q BSI 1997 STD-BSI BS EN bZLib-2-ENGL 1777 1b24bb9 Obb7790 833 = Page 5 EN 61146-2 : 1997 Page Smearing . 38 3.5.1 Method of measurement . 38 3.5.2 Presentati
31、on of results . 39 Registration . 39 3.6.1 Characteristics to be specified 39 3.6.2 Method of measurement . 39 3.6.3 Alternative method of measurement . 42 Geometric distortions . 45 3.7.1 Conventional method 45 3.7.2 Alternative method . 45 . = * * m Clause 3.5 3.6 3.7 Figures Figure 1 . Equipment
32、arrangement for measurement of sensitivity . Figure 2 . Specification of grey scale test chart . Figure 4 . Specification of the transparent test charts for measurement of modulation depth . Figure 6 . Specification of the reflective test chart for measurements signal-to- Figure 7 . Equipment arrang
33、ement for measurement of waveform distortion Figure 8 . Specification of the transparent test chart for measurement of streaking Figure 10 . Equipment arrangement for measurement of gamma and white balance Figure 3 . Equipment arrangement for measurement of resolution . Figure 5 . Equipment arrangem
34、ent for measurement of signal-to-noise ratio noise ratio and white shading Figure 9 . Examples of waveforms tracking characteristics. colour and white reproduction. white clipping and compression rate. and flare Figure 11 . Specification of the rectangle Figure 12 . Eqdipment arrangement for measure
35、ment of tracking error of white shading . Figure 13 -Waveform of the tracking error of white shading Figure 14 . Equipment arrangement for measurement of colour reproduction . Figure 15 . Specification of arrangement of colour samples for measurement of Figure 16 . Specification of the test chart fo
36、r measurement of overall flare (average Figure 17 . Specification of the test chart for measurement of localized flare Figure 18 . Specification of the transparent test chart for measurement of Figure 19 . Equipment arrangement for measurement of registration (conventional Figure 20 . Specification
37、of the reflective test chart for measurement of registration Figure 21 . Definition of the zones for a conventional method of measurement of Figure 22 . Equipment arrangement for the alternative method of measurement of colour reproduction . picture level = 50 %) (average picture level = 99 %) . sme
38、aring and blooming . method) (conventional method) . registration registration 10 11 15 15 17 18 20 20 21 22 24 25 26 30 31 35 35 38 40 41 42 42 8 BSI 1997 Page 6 EN 61146-2 : 1997 measurement metnoa or registration Figure 24 . Dimensional specification of V pattern . Figure 25 . Extraction of timin
39、g offsets for calculation of registration errors Figure 26 . Equipment arrangement for measurement of geometric distortion Figure 27 -Definition of the zones in the V pattern test chart for measurement of 43 43 44 46 geometric distortion . 46 Figure 28 - Definitions of barrel and pincushion distorti
40、on 47 Annex A Bibliography 49 Annex ZA (normative) Normative references to international publications 50 with their corresponding European publications . O BSI 1997 STD-BSI BS EN blL4b-2-ENGL L777 W lb24bb9 Obb7772 bDb D Page 7 EN 61146-2 : 1997 VIDEO CAMERAS (PAUSECAM/NTSC) - METHODS OF MEASUREMENT
41、 - Part 2: Two- and three-sensor professional cameras 1 General 1.1 Scope This part of IEC 61 146 applies to the assessment of performance of professional colour video cameras equipped with two and three tubes or solid state imagers, used for educational or industrial purposes and in other applicati
42、ons. This pari of IEC 61146 defines test patterns, measurement conditions, and methods of measurement, so as to enable the comparison of the results of measurements. The methods of measurement are designed to enable the assessment of the performance of cameras by using light input from the lens and
43、any electrical outputs of the cameras, for example, R-G-B signals, Y-C separate signals, and composite video signals. This standard does not specify limiting values for various parameters. 1.2 Normative references The following normative documents contain provisions which, through reference in this
44、text, constitute provisions of this part of IEC 61 146. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this part of IEC 61146 are encouraged to investigate the possibility of applying the most recent
45、editions of the normative documents listed below. Members of IEC and IS0 maintain registers of currently valid International Standards. IEC 61 146-1 : 1994, Video cameras (PAUSECAM/NTSC) - Methods of measurement - Part 1: Non-broadcast single-sensor cameras ISO/CIE 10526: 1991, CIE colorimetric stan
46、dard illurninants ISO/CIE 10527: 1991 , CIE colorimetric standard observers BU Techn. 3237: 1983, Methods of measurement of the colorimetric fidelity of television cameras Corrigendum (1989) Supplement 1 : 1989, Measurement procedures Publication CIE 15.2: 1986, Colorimetry Page 8 EN 61146-2 : 1997
47、1.3 Conditions 1.3.1 Environmental conditions All measurements shall be carried out within the environmental conditions specified by the manufacturer of the camera under assessment. The environmental conditions during measurement, at least the temperature and the relative humidity, shall be reported
48、 together with the results of measurements. An adequate warm up time shall be allowed. 1.3.2 Conditions of measurements The measurements shall be carried out either by measuring the output signals of the device when the camera is shooting different test charts, depending on the characteristic to be
49、measured, or by measuring the distortions on a monitor screen. 1.3.2.1 Test charts All the test charts used for measurement shall be specified with the results, together with the lighting conditions (illumination intensity, correlated colour temperature, etc.). The test charts shall be shot by the camera so that the frame limited by the arrows coincides exactly with the edges of the picture displayed on the video monitor in underscan mode. The test charts may be either reflective or transparent. Where there is a choice, the reflective te
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