1、 IEC 61966-8 Edition 1.0 2001-02 INTERNATIONAL STANDARD NORME INTERNATIONALE Multimedia systems and equipment Colour measurement and management Part 8: Multimedia colour scanners Systmes et appareils multimdia Mesure et gestion de la couleur Partie 8: Scanners multimdia couleur IEC 61966-8:2001 colo
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16、STANDARD NORME INTERNATIONALE Multimedia systems and equipment Colour measurement and management Part 8: Multimedia colour scanners Systmes et appareils multimdia Mesure et gestion de la couleur Partie 8: Scanners multimdia couleur INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQU
17、E INTERNATIONALE W ICS 33.160.60; 35.180 PRICE CODE CODE PRIX ISBN 978-2-83220-608-9 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributo
18、r. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. colour inside 2 61966-8 IEC:2001 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope and object 9 2 Normative references . 9 3 Terms and definitions . 10 4 Letters and symbols . 11 5 Conditions 12 5.1 Gene
19、ral conditions 12 5.2 Output digital image data 12 6 Measurement equipment and target of scan . 12 6.1 Spectrophotometer 12 6.2 Spectroradiometer . 12 6.3 Specification of the target 13 7 Spectral power distribution of the built-in light source . 15 7.1 Characteristics to be measured . 15 7.2 Measur
20、ement conditions 15 7.3 Presentation of results 15 8 Tone characteristics . 17 8.1 Characteristics to be measured . 17 8.2 Measurement conditions 17 8.3 Method of measurement 17 8.4 Calculation of results . 17 8.5 Presentation of results 18 9 Inverse tone characteristics 19 9.1 Characteristics to be
21、 calculated . 19 9.2 Method of calculation 19 9.3 Presentation of results 20 10 Spectral responsivity characteristics . 20 10.1 Characteristics to be measured . 20 10.2 Measurement conditions 21 10.3 Method of measurement 21 10.4 Presentation of results 21 11 Spatial non-uniformity . 25 11.1 Charact
22、eristics to be measured . 25 11.2 Measurement conditions 25 11.3 Method of measurement 25 11.4 Presentation of results 27 12 Mid-term instability . 28 12.1 Characteristics to be measured . 28 12.2 Measurement conditions 28 12.3 Method of measurement 29 12.4 Presentation of results 29 13 Large area s
23、patial crosstalk 29 13.1 Characteristics to be measured . 29 13.2 Measurement conditions 29 61966-8 IEC:2001 3 13.3 Method of measurement 30 13.4 Presentation of results 31 Annex A (normative) Estimation of multiband of wavelength sensitivities . 32 A.1 Quantities to be estimated . 32 A.2 Input to t
24、he algorithm 32 A.3 Output to the algorithm 33 A.4 Internal variables of the algorithm . 33 A.5 Estimation algorithm 33 Annex B (normative) Scanner model output data from estimated multiband sensitivities . 36 Annex C (informative) Examples for the application of the spectral characteristics . 37 C.
25、1 Calculation of the ICC profiles . 37 C.2 Calculation of an optimized conversion for sRGB colour space 37 Bibliography 38 Figure 1 Specification of the target for characterization of multimedia colour scanners . 13 Figure 2 Example of graphical representation of multiband spectral reflection of a c
26、olour patch 14 Figure 3 Scanning area and the points of measurement . 15 Figure 4 Example of the normalized spectral power distribution of the built-in light source 16 Figure 5 Example of reporting form of tone characteristics, light flux vs. output data 19 Figure 6 An example of multiband spectral
27、responsivity, R s , G s and B s 23 Figure 7 Example of reporting form of the overall multiband spectral responsitivity, n s S n R , n s S n Gand n s S n B. 25 Figure 8 Measurement points for spatial non-uniformity . 26 Figure 9 Example of report of mid-term instability 29 Figure 10 Target for the me
28、asurement of spatial crosstalk . 30 Table 1 Example of reporting form of a spectral table 14 Table 2 Example of multiband spectral characteristics of the light source 16 Table 3 Example of reporting form of the polynomial coefficients of the red, green and blue channel 18 Table 4 Example of reportin
29、g form of the polynomial coefficients of the red, green and blue channels . 20 Table 5 Example of reporting form of the multiband responsitivity characteristics . 22 Table 6 Reporting form for the measurement of spatial non-uniformity . 28 Table 7 Reporting form for the measurement of spatial crosst
30、alk . 31 Table 8 Reporting form of average data and maximum crosstalk given by relative maximum differences and relative standard deviations of data in red, green and blue channels (8 bits per channel) 31 4 61966-8 IEC:2001 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MULTIMEDIA SYSTEMS AND EQUIPMENT
31、 COLOUR MEASUREMENT AND MANAGEMENT Part 8: Multimedia colour scanners FOREWORD 1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote int
32、ernational co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, the IEC publishes International Standards. Their preparation is entrusted to technical committees; any IEC National Committee interested in th
33、e subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with cond
34、itions determined by agreement between the two organizations. 2) The formal decisions or agreements of the 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 Nat
35、ional Committees. 3) The documents produced have the form of recommendations for international use and are published in the form of standards, technical specifications, technical reports or guides and they are accepted by the National Committees in that sense. 4) In order to promote international un
36、ification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latte
37、r. 5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards. 6) Attention is drawn to the possibility that some of the elements of this international standard may be the subject of pa
38、tent rights. The IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 61966-8 has been prepared by IEC technical committee 100: Audio, video and multimedia systems and equipment. This bilingual version (2013-03) corresponds to the monolingual En
39、glish version, published in 2001-02.The text of this standard is based on the following documents: FDIS Report on voting 100/192/FDIS 100/218/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. The French version of
40、this standard has not been voted upon. This publication has been drafted in accordance with the ISO/IEC Directives, Part 3. 61966-8 IEC:2001 5 IEC 61966 consists of the following parts, under the general title: Multimedia systems and equipment Colour measurement and management: Part 1: General 1 Par
41、t 2-0: Colour management in multimedia systems 1 Part 2-1: Colour management Default RGB colour space sRGB Part 2-2: Colour management Extended RGB colour space sRGB64 1 Part 2-3: Colour management Default YCC colour space sYCC 1 Part 3: Equipment using cathode ray tubes Part 4: Equipment using liqu
42、id crystal display panels Part 5: Equipment using plasma display panels 1 Part 6: Equipment used for digital image projection 1 Part 7-1: Colour printers Reflective prints RGB inputs 1 Part 7-2: Colour printers Reflective prints CMYK input 1 Part 7-3: Colour printers Transparent prints 1 Part 8: Mul
43、timedia colour scanners 1 Part 9: Digital cameras Part 10: Quality assessment Colour image in network systems 1 Part 11: Quality assessment Impaired video in network systems 1Annexes A and B form integral parts of this standard. Annex C is for information only. The committee has decided that the con
44、tents of this publication will remain unchanged until 2003. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or amended. IMPORTANT The colour inside logo on the cover page of this publication indicates that it contains colours which are considered to be us
45、eful for the correct understanding of its contents. Users should therefore print this document using a colour printer. _ 1To be published. 6 61966-8 IEC:2001 INTRODUCTION This introduction is intended to distinguish the field of application of ISO 12641 and IEC 61966-8. In order to standardize the c
46、alibration procedure for input scanners used in the printing and prepress industry, ISO 12641 was published in 1997. This part of IEC 61966 targets colour scanners for multimedia applications by providing characterization data necessary for colour management in open multimedia systems. It characteri
47、zes any multimedia colour scanners for consumer use, typically being connected to personal computers so as to capture colour images and display the colour information, either locally or distributed worldwide. In such applications, colour management is important. Any red green blue data should have t
48、heir colorimetric attributes clearly specified. The characterization data reported from this part of IEC 61966 will be used for the calculation of equipment specific colorimetric characterization so that colour management in open systems can be conducted. The capture of colour information in a prepr
49、ess input scanner usually assumes that the source is a positive film (transparent) original. The second most common type of original is positive photographic printing paper (reflective). Recently, prepress input scanners can support various types of reflective originals in addition to printing paper and can also capture an image directly
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