ISO-16485-2000.pdf
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1、Reference number ISO/IEC 16485:2000(E) ISO/IEC 2000 INTERNATIONAL STANDARD ISO/IEC 16485 First edition 2000-09-15 Information technology Mixed Raster Content (MRC) Technologies de linformation Contenu des rasters-multiples (MRC) Copyright International Organization for Standardization Provided by IH
2、S under license with ISO Licensee=Rock Island Arsenal/9983967100, User=Schabilion, Shelley Not for Resale, 04/10/2007 07:20:24 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 16485:2000(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance wi
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4、policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Eve
5、ry care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2000 All rights reserved. Unless otherwise specified, no part of this publi
6、cation 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 Gen
7、eva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO/IEC 2000 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Rock Island Arsenal/9983967100, User=Schabilio
8、n, Shelley Not for Resale, 04/10/2007 07:20:24 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 16485:2000(E) ISO/IEC 2000 All rights reservediii CONTENTS Page Forewordiv Introduction and background.v 1Scope1 2References1 3Definitions2 4Conventions3 5Image representa
9、tion3 6Stripe structure .4 6.1Three-layer stripe (3LS).4 6.2Two-layer stripe (2LS).4 6.3One-layer stripe (1LS)5 7Image coding5 7.1Spatial resolution5 7.2Stripe width and layer width 5 7.3Stripe height and layer height.6 7.4Layer combination6 8Layer transmission order6 9Data format.6 9.1Overview6 9.2
10、Page data structure .7 9.2.1Start of page marker segment.7 9.2.2Optional marker segments9 9.2.2.1 Layer base colour gamut range marker segment (OMSg), MRC10 entry.9 9.2.2.2 Layer base colour illuminant marker segment (OMSi), MRC11 entry10 9.2.2.3 MRC3 to MRC9 and MRC12 to MRC254 entry for future ext
11、ensions.11 9.2.3TN (Termination Number).11 9.3Stripe data structure11 9.4EOP (End of Page).13 9.5Layer data structure13 9.6Data format summary.13 9.6.1High-level data format summary13 9.6.2Detail data format summary.13 Annex A - Mixed Raster Content (MRC) Modes 2 and 3.22 Copyright International Org
12、anization for Standardization Provided by IHS under license with ISO Licensee=Rock Island Arsenal/9983967100, User=Schabilion, Shelley Not for Resale, 04/10/2007 07:20:24 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 16485:2000(E) iv ISO/IEC 2000 All rights reserv
13、ed Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through tec
14、hnical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take p
15、art in the work. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. Draft International Standards adopted by the joint technical com
16、mittee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights.
17、ISO and IEC shall not be held responsible for identifying any or all such patent rights. International Standard ISO/IEC 16485 was prepared by the International Telecommunication Union (ITU) (as ITU-T Recommendation T.44) and was adopted, under a special “fast-track procedure”, by Joint Technical Com
18、mittee ISO/IEC JTC 1, Information technology, in parallel with its approval by national bodies of ISO and IEC. Annex A forms a normative part of this International Standard. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Rock Island Arsenal/9
19、983967100, User=Schabilion, Shelley Not for Resale, 04/10/2007 07:20:24 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 16485:2000(E) ISO/IEC 2000 All rights reservedv Introduction and background The Mixed Raster Content (MRC) Recommendation is a way of describing r
20、aster-oriented (scanned and/or rasterized synthetic images) documents with both bi-level (text and/or line-art) and multi-level (colour/continuous-tone) data within a page. The goal of this MRC Recommendation is to make exchange of raster-oriented mixed content colour documents among users with vari
21、ed communication systems possible with higher speed, higher image quality and modest computing resources (memory, storage and processing power). The dramatic increase in exchange of electronic documents has raised customer expectations and requirements for raster-oriented documents. Colour must be e
22、xchanged just as graceful and efficiently as black image quality in a scan anywhere - print anywhere environment is directly related to the exchange of device independent data forms and the rendering compromises made by the output engine; fast printing with modest resources is related to low complex
23、ity of the format. The best approach to achieve high compression ratios and retain quality is to compress the different segments of the raster data according to their individual attributes. Text and line-art data (bi-level data) would be compressed with an approach that puts high emphasis on maintai
24、ning the detail and structure of the input. Pictures and colour gradients (multi-level data) would be compressed using an approach that puts a high emphasis on maintaining the smoothness and accuracy of the colours. These different data types (bi-level and multi-level) are often conceptualized as be
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