1、DD ISO/TS10128:2009ICS 37.100.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWDRAFT FOR DEVELOPMENTGraphic technology Methods ofadjustment of thecolour reproductionof a printing systemto match a set ofcharacterization dataThis Draft for Developmentwas published under theautho
2、rity of the StandardsPolicy and StrategyCommittee on 31 July 2010 BSI 2010ISBN 978 0 580 66015 3Amendments/corrigenda issued since publicationDate CommentsDD ISO/TS 10128:2009National forewordThis Draft for Development is the UK implementation of ISO/TS10128:2009.This publication is not to be regard
3、ed as a British Standard.It is being issued in the Draft for Development series of publications andis of a provisional nature. It should be applied on this provisional basis,so that information and experience of its practical application can beobtained.Comments arising from the use of this Draft for
4、 Development arerequested so that UK experience can be reported to the internationalorganization responsible for its conversion to an international standard.A review of this publication will be initiated not later than 3 years afterits publication by the international organization so that a decision
5、 can betaken on its status. Notification of the start of the review period will bemade in an announcement in the appropriate issue of Update Standards.According to the replies received by the end of the review period,the responsible BSI Committee will decide whether to support theconversion into an
6、international Standard, to extend the life of theTechnical Specification or to withdraw it. Comments should be sent tothe Secretary of the responsible BSI Technical Committee at BritishStandards House, 389 Chiswick High Road, London W4 4AL.The UK participation in its preparation was entrusted to Tec
7、hnicalCommittee PAI/43, Graphic technology.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a Brit
8、ish Standard cannot confer immunityfrom legal obligations.DD ISO/TS 10128:2009Reference numberISO/TS 10128:2009(E)ISO 2009TECHNICAL SPECIFICATION ISO/TS10128First edition2009-07-01Graphic technology Methods of adjustment of the colour reproduction of a printing system to match a set of characterizat
9、ion data Technologie graphique Mthodes dajustage de la reproduction de couleurs dun systme dimpression pour correspondre un ensemble de donnes de caractrisation DD ISO/TS 10128:2009ISO/TS 10128:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing p
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13、ublication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 G
14、eneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reservedDD ISO/TS 10128:2009ISO/TS 10128:2009(E) ISO 2009 All rights reserved iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Normative references 1 3
15、 Terms and definitions .1 4 Procedures .3 4.1 General3 4.2 Matching of tone value curves .4 4.3 Use of near-neutral scales 5 4.4 Use of CMYK to CMYK multi-dimensional transforms 7 5 Applicability of each method8 Annex A (normative) Tone value .9 Bibliography 12 DD ISO/TS 10128:2009ISO/TS 10128:2009(
16、E) iv ISO 2009 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body int
17、erested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnic
18、al Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the
19、technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. In other circumstances, particularly when there is an urgent market requirement for such documents, a technical commit
20、tee may decide to publish other types of normative document: an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in an ISO working group and is accepted for publication if it is approved by more than 50 % of the members of the parent committee casting
21、a vote; an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting a vote. An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether
22、it will be confirmed for a further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an International Standard or be withdrawn. ISO/TS 10128
23、 was prepared by Technical Committee ISO/TC 130, Graphic technology. DD ISO/TS 10128:2009ISO/TS 10128:2009(E) ISO 2009 All rights reserved vIntroduction As the printing and publishing world has embraced the use of digital data and the preparation of printing plates directly from digital data (often
24、referred to as computer to plate or CTP), it has struggled to find ways to take better advantage of the electronic data manipulation opportunities offered. When traditional half-tone film was the medium of exchange of final material and the input to the printing plate and press operation, the primar
25、y methodology available to the printer to match industry aims and standards was to force the press, ink and paper to be as close as possible to the references upon which the printing standards were based. Today, with digital data input, it is recognized that modification of that digital data can be
26、used to compensate (adjust) for some of the differences in press, ink and paper between various printing sites and between the actual conditions at a specific site and the reference or standard printing condition. As part of the introduction of digital technology, the printing industries (and its st
27、andards activities) have begun to establish reference characterization data corresponding to various printing specifications and conditions. Characterization data is generally defined as the relationship between the CMYK digital input values (in the data file exchanged) and the measured colorimetric
28、 values for the colour printed in response to these values. Discussions within Technical Committee ISO/TC 130 have identified three general methods by which compensation for differences in printing conditions can be accomplished. Two of these make use of individual one-dimensional transforms (i.e. p
29、late curves) for each printing channel, but differ in the method by which these transforms are determined. These are referred to as matching of tone value curves and use of near-neutral scales. The third method makes use of multi-dimensional transforms such as International Color Consortium (ICC) de
30、vice-link profiles. The features and general methodology for use of these adjustment techniques is the subject of this Technical Specification. The goal is to provide a common understanding of these procedures across the industry, to allow consistency between implementations, and to facilitate commu
31、nication of the adjustments used/desired in particular workflows. It is important to recognize that these are not competitive solutions, but each have different strengths and weaknesses in individual workflow applications. It is the choice of the individual print facility and/or the involved trade a
32、ssociations to decide how to best apply these capabilities, made possible through the use of digital data. The basic assumption behind the use of characterization data and these correction techniques is that a printing process can be repeatedly restored to a prior printing condition and that conditi
33、on can be maintained both within a run and between runs. A variety of process control methods can be used to achieve this repeatability. Solid ink reflectance density and tone value increase based on the specific materials involved, and tied back to the conditions established during characterization
34、 are common process control tools that are used in addition to the data adjustment techniques described in this document. These adjustment techniques work together with process control to achieve the printing quality desired. The International Organization for Standardization (ISO) draws attention t
35、o the fact that it is claimed that compliance with this document may involve the use of a patent concerning recalibrating a multi-colour imaging system given in 4.3. ISO takes no position concerning the evidence, validity and scope of this patent right. The holder of this patent right has assured IS
36、O that he/she is willing to negotiate licences free of charge with applicants throughout the world. In this respect, the statement of the holder of this patent right is registered with ISO. Information may be obtained from: Intellectual Property Standards and Transactions Eastman Kodak Company 343 S
37、tate Street, Rochester, NY 14650, USA DD ISO/TS 10128:2009ISO/TS 10128:2009(E) vi ISO 2009 All rights reservedAttention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identified above. ISO shall not be held responsible for
38、identifying any or all such patent rights. DD ISO/TS 10128:2009TECHNICAL SPECIFICATION ISO/TS 10128:2009(E) ISO 2009 All rights reserved 1Graphic technology Methods of adjustment of the colour reproduction of a printing system to match a set of characterization data 1 Scope This Technical Specificat
39、ion specifies three methods for the adjustment of the digital content data that is input to a printing system to achieve consistency in the printed results among a number of presses printing to the same general aim conditions. These three methods are generally identified as a) the matching of tone v
40、alue curves, b) the use of near-neutral scales, and c) the use of CMYK to CMYK multi-dimensional transforms. The procedures for establishing the aim condition for the necessary transfer curves, the procedures for determining the individual transfer curves, and a comparison of the applicability of th
41、ese three methods are included. These adjustment procedures are applicable to printing systems that use CMYK colourants but are not restricted to those that use traditional ink on paper printing but can involve other marking technologies such as those used for proofing and/or digital printing. 2 Nor
42、mative 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. ISO 12642-1, Graphic technology
43、 Input data for characterization of 4-colour process printing Part 1: Initial data set ISO 12642-2, Graphic technology Input data for characterization of 4-colour process printing Part 2: Expanded data set ISO 13655, Graphic technology Spectral measurement and colorimetric computation for graphic ar
44、ts images ISO 15076-1, Image technology colour management Architecture, profile format and data structure Part 1: Based on ICC.1:2004-10 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. DD ISO/TS 10128:2009ISO/TS 10128:2009(E) 2 ISO 2009 All right
45、s reserved3.1 adjustment of a printing system with digital data systematic modification of the content data received, to enable the results printed on a specific device to match the appearance of the same content data as would have been printed on a reference device 3.2 digital printing printing dir
46、ectly from digital data when there is no intermediate image carrier, or when the image carrier is refreshed for each impression, and thus each impression can be different in content if desired 3.3 grey balance set of tone values for cyan, magenta and yellow that are expected to appear as an achromat
47、ic grey under specified viewing conditions when printed using the specified printing conditions NOTE 1 Adapted from ISO 12647-1. NOTE 2 The user can choose between the following two practical definitions and one theoretical definition of grey, depending upon the particular context: a) practical defi
48、nitions: 1) a colour having the same CIELAB a* and b* values as the print substrate; 2) a colour that has the same CIELAB a* and b* values as a half-tone tint of similar L* value printed with black ink; b) theoretical definition: the colorimetric definition of grey is when the CIELAB a* and b* value
49、s both equal 0. 3.4 tone value A proportional printing value encoded in a data file and interpreted as defined in the file format specification NOTE 1 Most files store these data as 8-bit integer values, i.e. 0 to 255. The tone value, A, expressed as a percentage of a pixel, is typically computed from the equation p0100 0100VVAVV=where Vpis the integer value of the pixel in the file; V0is the integer value corresponding to a tone value of 0 %; V100is the integer value corresponding to a tone value of 100 %. NOTE 2
