ISO-10918-2-1995.pdf
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1、I N T E R NAT I O NA L ISO/IEC STANDARD 10918-2 First edition 1995-08-1 5 Information technology - Digital compression and coding of continuous-tone still images: Compliance testing Technologies de linformation - Compression numrique et codage des images fixes de nature photographique: Test de confo
2、rmit Reference number ISO/IEC 1 O91 8-211 995(E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 02:24:13 MDTNo reproduction or networking permitted without license from IH
3、S -,-,- m 48519i33 Ob32795 497 m ISO/IEC 10918-2:1995(E) CONTENTS 1 Scope 2 Normative references . 3 Definitions, abbreviations, symbols, and conventions . 4 General . 5 Compressed data format compliance testing 6 Encoder compliance tests . 7 Decoder compliance tests . Annex A - Procedures for deter
4、mining generic encoder and decoder compliance . Annex B - Quantization tables for generic compliance testing of DCT-based processes . Annex C - Compressed test data stream structure for generic decoder compliance tests . Annex D - Construction of application-specific compliance tests Annex E - Compl
5、iance test data for testing of greater computational accuracy . Annex F - Specification of supported parameter ranges . Annex H - Examples and guidelines . Page 1 1 1 4 6 19 20 25 28 30 51 53 55 58 ISOAEC 1995 All rights reserved . Unless otherwise specified. no part of this publication may be repro
6、duced or utilized in any form or by any means. electronic or mechanical. including photocopying and microfilm. without permission in writing from the publisher . Printed in Switzerland ISOAEC Copyright Office Case postale 56 CH-1211 Genkve 20 Switzerland ii Copyright International Organization for S
7、tandardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 02:24:13 MDTNo reproduction or networking permitted without license from IHS -,-,- o ISO/IEC 4851903 0632796 323 = ISO/IEC 10918-2:1995(E) Foreword IS0 (the Internati
8、onal Organization for Standardization) and IEC (the Inter- national Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of IS0 or IEC participate in the development of International Standards through technical committees establishe
9、d by the respective organization to deal with particular fields of technical activity. IS0 and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with IS0 and IEC, also take part in the work. In the fiel
10、d of information technology, IS0 and IEC have established a joint technical committee ISOIEC JTC 1. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the
11、national bodies casting a vote. International Standard ISOAEC 1091 8-2 was prepared by Joint Technical Com- mittee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information, in collaboration with ITU-T. The identical text is published
12、as ITU-T Recommendation T.83. ISOAEC 10918 consists of the following parts, under the general title Information technology - Digital compression and coding of continuous-tone still images: - Part I: Requirements and guidelines - Part 2: Compliance testing Annexes A to D form an integral part of this
13、 part of ISOAEC 10918. Annexes E to H are for information only. . 111 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 02:24:13 MDTNo reproduction or networking permitted wi
14、thout license from IHS -,-,- ISO/IEC 10918-2:1995(E) Introduction This Recommendation I International Standard, Digital Compression and Coding of Continuous-tone Still Images, is published as two parts: - - ITU-T Rec. T.81 I ISOAEC 10918-1: Requirements and guidelines. ITU-T Rec. T.83 I ISOAEC 10918
15、-2: Compliance testing. ITU-T Rec. T.81 I ISOAEC 10918-1 sets out requirements and implementation guidelines for continuous-tone still image encoding and decoding processes, and for the coded representation of compressed image data. These processes and representations are intended to be generic, tha
16、t is, to be applicable to a broad range of applications for colour and grayscale still images within communications and computer systems. This part, ITU-T Rec. T.83 I ISOAEC 10918-2, sets out tests for determining whether implementations comply with the requirements for the various encoding and deco
17、ding processes specified in ITU-T Rec. T.81 I ISOAEC 10918-1. ITU-T Rec. T.83 I ISOJEC 10918-2 also specifies tests for determining whether any specific instance of compressed data complies with the ITU-T Rec. T.8 1 I ISOAEC 109 18- 1 specification for compressed data format. The committee which has
18、 prepared this Specification is the ISOAEC JTCl/SC29/WGl Sub Group on JPEG, also known as the Joint Photographic Experts Group (JPEG). Both the committee and the two parts of this Specification continue to be known informally by the name PEG. The “joint” in JPEG refers to the committees collaboratio
19、n with the ITU-T SG8 Rapporteurs Group on Recommendation Q. 16. In this collaboration, WGl has performed the work of selecting, developing, documenting, and testing the generic compression processes. ITU-T SG8 has provided the requirements which these processes must satisfy to be useful for specific
20、 image communications applications such as facsimile, videotex, and audiographic conferencing. This Specification is presented in accordance with the rules of ITU-T and ISOAEC JTC1 established by “Rules for presentation of ITU-T I ISOAEC common text”. iv Copyright International Organization for Stan
21、dardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/05/2007 02:24:13 MDTNo reproduction or networking permitted without license from IHS -,-,- m q853903 Ob32798 LTb m ISO/IEC 10918-2 : 1995 (E) INTERNATIONAL STANDARD ITU-T RECOMM
22、ENDATION INFORMATION TECHNOLOGY - DIGITAL COMPRESSION AND CODING OF CONTINUOUS-TONE STILL IMAGES: COMPLIANCE TESTING 4 1 Scope This Recommendation I International Standard is concerned with compliance tests for the continuous-tone still image encoding processes, decoding processes, and compressed da
23、ta formats specified in -T Rec. T.81 I ISOAEC 10918-1. This Specification: - - - - - specifies compliance tests for the ITU-T Rec. T.81 I ISO/IEC 10918-1 compressed data formats; specifies compliance tests for the ITU-T Rec. T.8 1 I ISO/IEC 109 18-1 encoding processes; specifies compliance tests for
24、 the ITU-T Rec. T.81 I ISO/IEC 10918-1 decoding processes; specifies a method for constructing application-specific compliance tests; gives guidance and examples on how to implement these tests in practice. This Specification specifies normative generic compliance tests for the ITU-T Rec. T.81 I ISO
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