1、 IEC 63029 Edition 1.0 2017-07 INTERNATIONAL STANDARD Audio, video multimedia systems and equipment Multimedia e-publishing and e-book technologies Raster-graphics image-based e-books IEC 63029:2017-07(en) colour inside THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2017 IEC, Geneva, Switzerland
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11、and e-book technologies Raster-graphics image-based e-books INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.160.99; 35.140; 35.240.30 ISBN 978-2-8322-4490-6 Registered trademark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized
12、 distributor. colour inside 2 IEC 63029:2017 IEC 2017 CONTENTS FOREWORD . 4 INTRODUCTION . 6 1 Scope 7 2 Normative references 7 3 Terms and definitions 7 4 Raster-graphic image-based e-book 7 4.1 General . 7 4.2 Target sourcebook 8 5 Scanning scheme 8 5.1 Cutting the sourcebook . 8 5.2 Scanning sour
13、cebook 8 5.3 Setup/adjustment of image quality related parameters 9 5.3.1 Elimination of unintended density variation 9 5.3.2 Resolution . 9 5.3.3 Highlight washout point 9 5.3.4 Tone curve adjustment / Black point setup . 9 5.4 Post-processing / encoding . 10 5.4.1 Post-processing . 10 5.4.2 Encodi
14、ng . 10 Annex A (informative) Defect examples . 11 A.1 Image loss 11 A.2 Image tilt . 12 A.3 Show-through . 13 A.4 Line image discontinuity 13 A.5 Moir 14 A.6 Highlight washout . 15 A.7 Highlight washout and unwanted shadow clipping . 16 Bibliography 18 Figure 1 Workflow for generating e-book from s
15、ourcebook . 8 Figure 2 Tone curve adjustment / Black point setup . 10 Figure A.1 An example of the double-page spread without image loss . 11 Figure A.2 An example of the double-page spread with image loss 12 Figure A.3 An example of the text image without image tilt. 12 Figure A.4 An example of the
16、 text image with image tilt . 12 Figure A.5 An example of the text image without show through 13 Figure A.6 An example of the text image with show through . 13 Figure A.7 An example of the text image without line image discontinuity 14 Figure A.8 An example of the text image with line image disconti
17、nuity . 14 Figure A.9 An example of the photographic image without moir 14 Figure A.10 An example of the photographic image with moir 15 Figure A.11 An example of the business graphics image without highlight washout 15 Figure A.12 An example of the business graphics image with highlight washout 16
18、IEC 63029:2017 IEC 2017 3 Figure A.13 An example of the photographic image without highlight washout and unwanted shadow clipping 16 Figure A.14 An example of the photographic image with highlight washout 17 Figure A.15 An example of the photographic image with unwanted shadow clipping 17 4 IEC 6302
19、9:2017 IEC 2017 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ AUDIO, VIDEO MULTIMEDIA SYSTEMS AND EQUIPMENT MULTIMEDIA E-PUBLISHING AND E-BOOK TECHNOLOGIES RASTER-GRAPHICS IMAGE-BASED E-BOOKS FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardizatio
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29、 the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be h
30、eld responsible for identifying any or all such patent rights. International Standard IEC 63029 has been prepared by IEC technical committee 100: Audio, video and multimedia systems and equipment. The text of this International Standard is based on the following documents: CDV Report on voting 100/2
31、817/CDV 100/2918/RVC Full information on the voting for the approval of this International Standard can be found in the report on voting indicated in the above table. This document has been drafted in accordance with the ISO/IEC Directives, Part 2. IEC 63029:2017 IEC 2017 5 The committee has decided
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34、olour printer. 6 IEC 63029:2017 IEC 2017 INTRODUCTION Scanning of existing printed books is presently carried out widely to store their content in an electronic format: raster-graphics image-based e-books. The scanning includes number of parameters and sometimes results in poor-quality scanned data
35、due to inappropriate parameter settings. The scanning devices with storage memory and automatic document feeders enable swift production of raster-graphics image-based e-books with a brief procedure that does not require advanced skills and knowledge. Scanning schemes can have many attributes which
36、affect to the quality of raster-graphics image-based e-books, such as environmental conditions, sheet cutting/scanning operation, resolution, highlight washout point, tone curve adjustment/black point setup, post-processing and encoding. For example, inadequate selection of the scanning resolution c
37、an cause moir in halftone images and discontinuation of lines in text images. The purpose of this document is to specify a scanning scheme for developing raster-graphics image-based e-books. When conforming to this document, a reasonable quality of raster-graphics image-based e-books is to be expect
38、ed. IEC 63029:2017 IEC 2017 7 AUDIO, VIDEO MULTIMEDIA SYSTEMS AND EQUIPMENT MULTIMEDIA E-PUBLISHING AND E-BOOK TECHNOLOGIES RASTER-GRAPHICS IMAGE-BASED E-BOOKS 1 Scope This document specifies the scanning scheme to develop raster-graphics image-based e- books from existing printed books. 2 Normative
39、 references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendm
40、ents) applies. IEC 61966-2-1, Multimedia systems and equipment Colour measurement and management Part 2-1: Colour management Default RGB colour space sRGB ISO 12639, Graphic technology Prepress digital data exchange Tag image file format for image technology (TIFF/IT) 3 Terms and definitions For the
41、 purposes of this document, the following terms and definitions apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 3.1
42、bitmap image of sourcebook two-dimensional raster data of each page of a sourcebook that can be aligned in exactly same page order as the sourcebook 3.2 raster-graphics image-based e-book category of an e-book which consists of the bitmap image of sourcebook 3.3 sourcebook printed book to be scanned
43、 4 Raster-graphic image-based e-book 4.1 General The creation sequence for raster-graphics image-based e-books is shown in Figure 1. 8 IEC 63029:2017 IEC 2017 Figure 1 Workflow for generating e-book from sourcebook There are six steps to generating an e-book from the sourcebook, such as the preparat
44、ion of the sourcebook, cutting the sourcebook, scanning the sourcebook, setup/adjustment of image quality related parameters, post-processing/encoding, authoring e-book. The first step is to clean up and to repair the sourcebook so that it becomes as close as possible to its original condition. A fl
45、atbed scanner is normally used for the third step, raster-graphics image-based e-books scanning operation, so the second step is to cut the sourcebook to make the scanning operation easier. The fourth step is to setup/adjust scanning parameters such as resolution and tone curve. The fifth step is to
46、 adjust and to encode the scanned data for output media. The sixth step is authoring the e-book. This document specifies the second to fifth steps, which form the scanning scheme. Raster-graphics image-based e-books can be categorized as one of the fixed layout e-books. 4.2 Target sourcebook The sou
47、rcebooks to which this document applies are mangas, paperbacks, hard covers, textbooks, magazines, music scores and newspapers. 5 Scanning scheme 5.1 Cutting the sourcebook To avoid image loss, sheet cutting should be carried out exactly on the perimeter of the binding and the margin. If this is not
48、 possible, the cutting line shall be less than or equal to 2 mm from the perimeter of the binding and the margin. The cutting line should be parallel to the edge. To avoid variation of image area position between pages, the margin between pages should be less than or equal to 1 mm. NOTE See Clause A
49、.1 for a description of image loss. 5.2 Scanning sourcebook Scanning shall be done in at least 8 bits per pixel, 256 grey levels unless otherwise instructed. The sourcebook image area in the corresponding scanned image data should not have any tilt. Image tilt adjustment shall be done to achieve tilt angle of less than or equal to 0,5. NOTE See Clause A.2 for a description of image tilt. The scanning of the monochrome original shall be carri
