ISO/TR TECHNICAL REPORT 12033 First edition 2009-12-01 Document management Electronic imaging Guidance for the selection of document image compression methods Gestiondedocuments s-Imagerieélectronique-Directivespourle choix des méthodes de compression d'image Reference number ISO/TR 12033:2009(E) @ ISO 2009 ISO/TR12033:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In 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. Every 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. COPYRIGHTPROTECTEDDOCUMENT ? ISO2009 All rights reserved. Unless otherwise specified, no part of this publication 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 Iso's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 4122 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ Iso 2009 - All rights reserved ISO/TR 12033:2009(E) Contents Foreword Introduction 1 Scope 2 Normative references 3 Terms and definitions. 4 General. 5 Type of document and digitization parameters 5.1 General 5.2 Type of documents. 5.3 Document classification and digitization.. 6 Compression methods and standards 6.1 LZW compression (Lempel Ziv Welch) . 6.2 RLE compression (run-length encoding). 6.3 ITU-T algorithms.. 6.4 JBIG compressior 6.5 JBIG2compression 6.6 Discrete cosine transform (DcT) 6.7 Fractal compression .... .8 6.8 Wavelet compression. 6.9 JPEG compression.. 6.10 JPEG2000... 10 < Selection of compression parameters 12 7.1 Pertinence of compression ... 7.2 Selection of a compression method. 12 7.3 Adjusting JPEG compression... 13 8 Final considerations for the selection of a compression method . 14 Bibliography 15 Iso2009-All rights reserved ii