EN 61610-1996 en Prints and Transparencies Produced from Electronic Sources Assessment of Image Quality《电子源制相片及透明软片 图象质量的评定》.pdf
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1、CENELEC EN*b1*bLO 96 3404583 0177182 299 BRITISH STANDARD Prints and transparencies produced from electronic sources - Assessment of image quality The European standard EN 61610 : 1996 has the status of a British Standard ICs 36.240.20 37.100 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY
2、COPYRIGHT LAM 3s EN i1610 : 1996 EC 1610 : 1995 CENELEC EN*bL*bLO 96 W 3404583 0177183 125 = Amd. No. BS EN 61610 : 1996 Date Text affected Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee EPUl, Audio, video and multimedia
3、 systems and equipment, to Subcommittee EPUlB, Equipment and systems in the field of audio, video and audiovisual engineering, upon which the foilowing bodies were represented: Association of British Theatre Technicians Audio Engineering Society British Broadcasting Corporation British Educational S
4、uppliers? Association British Radio and Electronic Equipment Manufacturers? Association British Telecommunications plc Federation of British Audio Federation of the Electronics Industry Independent Television Association (rrvA) Institute of Sound and Communication Engineers institution of Electrical
5、 Engineers International Association of Broadcasting Manufacturers Professional Lightmg and Sound Association Royal institute of British Architects Society of Cable Television Engineers This British Standard, having been prepared under the direction of the Electrotechnicai Sector Board, was publishe
6、d under the authority of the Standards Board and comes into effect on 16 August 1996 o BI 1996 The foilowing BSI references relate to the work on this standard: Committee reference EPUIW3 Draft for comment 93?205914 DC ISBN O 580 26120 4 I - CENELEC EN*bL*hLO b 3404583 0377384 Ob3 BS EN 61610 : 1996
7、 Contents page Committees responsible inside front cover ii Nationai foreword 2 Foreword 3 Text of EN 61610 i O BI 1996 - CENELEC EN*bL*bLO 96 = 3404583 OL77L85 TT8 BS EN 61610 : 1996 National foreword This British Standard has been prepared by Subcommittee EPL/100/3 and is the English language vers
8、ion of EN 61610 : 1996 Prints and transparencies producedfrom electrorzic soumes - Assessment of imge quality, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with IEC 1610 : 1995, pubished by the International Electrotechnicd Commission (IEC). Cro
9、ss-references Publication referred to Corresponding British Standard BS 1384 Photographic density measurements Part 1 : 1985 Guide for terms, symbols and notations Part 2 : 1993 Spec(A) and ;(A) are the functions specified as the CIE 1931 standard colorimetric observer for a view angle of 2“ (see IS
10、O/ClE 10527). 4.3.3 Relation between input values and tristimulus values When the input signal is a standard analogue or digital video signal, the appropriate colorimetric specifcation should be used to transform corresponding tristimulus values. The conversions from R, G, B to the tristimulus value
11、s shall be made by the following equations according to the video standard used. CENELEC EN*bL*blO b 3404583 OL77L92 138 Page 7 EN 61610 : 1996 For standard NTSC system with standard illuminant C X = 0,60674 R + 0,17353 G + 0,20025 B Y = 0,29884 R + 0,58673 G + 0,11443 B Z= 0,00000 R + 0,0661 1 G +
12、1,11566 B For standard PAUSECAM systems with standard illuminant D, X= 0,43066 R + 0,34155 G + 0,17819 B Y = 0,22206 R + 0,70666 G + 0,07 128 B Z= 0,02019 R + 0,12956 G + 0,93848 B For any standard HDTV system The equations should be decided in accordance with the chromaticity coordinate values for
13、the input primary colours, and for the reference white, in accordance with the method described in 2. 5 Methods of measurements 5.1 Gamut of colours 5.1.1 Characteristics to be determined The maximum reproducible colour range m terms of the psychometric lightness and chromaticity. 5.1.2 Measurement
14、procedure a) The test signais containing input saturated colours shall be generated as specified by this standard.The signals shall correspond to the colours white, yellow, cyan, green, magenta, red, blue, and black as prints and transparencies. The level of each input signal shall be in accordance
15、with table 1. CENELEC EN*bL*b10 9b 3404583 0177193 079 H Page 8 EN 61610 : 1996 I imite 2 Yellow 3cym 4 Green 5 Magenta 6 Red 7 Blue 8 Black Table 1 - Input signal specification 1 O0 100 1 O0 1 O0 O 1 O0 O 100 100 O 1 O0 O O O O O Colours input signais % B 100 O 1 O0 O 100 O 100 O If the equipment a
16、ccepts standard video signals, the standard colour bar generator to produce colour bars (a) lKXl/O (see lTU-R Recommendation BT 471-1) may be used. b) The spectral density d(A), or spectral reflectance or spectral transmittance p(A), for object coiours of the prints or ihmhant colours of transparenc
17、ies, corresponding to the test signals, shall be measured for wavelengths from 400 nm to 700 nm in 10 nm steps. If spectral density is adopted for the measurement, it shall be converted to spectral reflectance or transmittance by the following formula: p(A) e) The tristimulus values, X, Y, 2 shall b
18、e calculated for each colour (see 4.3.2). 5.1.3 Presentation of results The measured spectral characteristics for the eight colours, including white and black, shall be plotted as the curves (see figure 1). The calculated tristimulus values shall be converted to values in the CIE 1976 colour space,
19、Lab as defined in CIE 15.2 for eight colours. They shall be reported as a table (see table 2), together with the kind of the standard iliuminant used for calculation. The results shall also be presented as graphs, as shown in figure 2. La - 116,O P-16,0 b - 200 ,O(Y-Z) CENELEC EN*hL*hLO b 3404583 01
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