1、 Reference numberISO/IEC 15444-4:2002(E)ISO/IEC 2002INTERNATIONAL STANDARD ISO/IEC15444-4First edition2002-11-01Information technology JPEG 2000 image coding system Part 4: Conformance testing Technologies de linformation Systme de codage dimage JPEG 2000 Partie 4: Essais de conformit Adopted by INC
2、ITS (InterNational Committee for Information Technology Standards) as an American National Standard.Date of ANSI Approval: 7/7/2003Published by American National Standards Institute,25 West 43rd Street, New York, New York 10036Copyright 2003 by Information Technology Industry Council (ITI).All right
3、s reserved.These materials are subject to copyright claims of International Standardization Organization (ISO), InternationalElectrotechnical Commission (IEC), American National Standards Institute (ANSI), and Information Technology Industry Council(ITI). Not for resale. No part of this publication
4、may be reproduced in any form, including an electronic retrieval system, withoutthe prior written permission of ITI. All requests pertaining to this standard should be submitted to ITI, 1250 Eye Street NW,Washington, DC 20005.Printed in the United States of AmericaISO/IEC 15444-4:2002(E) PDF disclai
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7、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. ISO/IEC 2002 All
8、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 ISOs member body in the country of
9、 the requester. ISO copyright office Case postale 56 CH-1211 Geneva 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 2002 All rights reservedISO/IEC 15444-4:2002(E) ISO/IEC 2002 All rights reserved iiiCONTENTSForewordviiIntroduct
10、ionviii1 Scope.12 References.13 Definitions. . . . . . . . . . . . . . . . . 24 Abbreviations55 Symbols.66 Generaldescription 76.1 Profilesandcomplianceclasses.76.2 Decoders.86.3 Encodersandcodestreams.86.4 Implementation compliancestatement86.5 Abstracttestsuites.86.6 Encodercompliancetestingproced
11、ure.86.7 Decodercompliancetestingprocedure.97 Conventions98 Copyright99 Compliance filesavailabilityandupdates. . . . . . . . . . . 9AnnexA DecoderComplianceClasses.10A.1 Complianceclassparameterdefinitions10A.2 Complianceclassdefinitions13A.3 Losslessencodinganddecoding.14AnnexB DecoderComplianceTe
12、stingProcedures15B.1 General.15B.2 Decodertestprocedure.15AnnexC ComplianceTests20C.1 Abstracttestsuite(informative)20C.2 Executabletestsuite(ETS).22AnnexD EncoderComplianceTestProcedure.30D.1 General.30D.2 Referencedecoder30D.3 Compliancerequirementandacceptance.30D.4 Encodingcompliancetestprocedur
13、e30AnnexE DecoderImplementationComplianceStatement33E.1 General.33E.2 Decoderimplementationcompliancestatement.33E.3 Extendedsupport.33ISO/IEC 15444-4:2002(E) iv ISO/IEC 2002 All rights reserved AnnexF EncoderImplementation ComplianceStatement37F.1 General.37F.2 Encoderdescription .38AnnexG JP2FileF
14、ormatReaderComplianceTestingProcedure.47G.1 General.47G.2 Compliancerequirementandacceptance.47G.3 ReadingaJP2filecompliancetestprocedure.47G.4 JP2fileformattestcodestreamsandimages48ISO/IEC 15444-4:2002(E) ISO/IEC 2002 All rights reserved vLIST OF FIGURESFigureB-1 Decodercompliancetestflowchart15Fi
15、gureD-1 Encodercompliancetestblockdiagram.31FigureG-1 JP2fileformatreadercompliancetestblockdiagram48ISO/IEC 15444-4:2002(E) vi ISO/IEC 2002 All rights reserved LIST OF TABLESTableA-1 Definitions ofcomplianceclasses(Cclass) . . . . . . . . . . .14TableC-1 Class0Profile0referenceimagesandallowableerr
16、ors.23TableC-2 ItemstestedbyProfile0codestreams.24TableC-3 Profile0codestream0contents24TableC-4 Class0Profile1referenceimagesandallowableerrors.26TableC-5 ItemstestedbyProfile1codestreams.26TableC-6 Class1Profile0referencefilesandmaximumerror.27TableC-7 Class1Profile1referenceimagesandallowableerro
17、r.29TableE-1 ICSforprofilesandCclass.33TableE-2 ExtendedcapabilitiesforCclass034TableE-3 ExtendedcapabilitiesforCclass135TableE-4 ExtendedcapabilitiesforCclass236TableF-1 EncoderImplementation MarkerUsage.37TableF-2 Delimitingmarkersandmarkersegments. . . . . . . . . . . .39TableF-3 Fixedinformation
18、markersegments39TableF-4 Functionalmarkersegments41TableF-5 Pointermarkersegments.45TableF-6 Inbitstreammarkersandmarkersegments.46TableF-7 Informationalmarkersegments46TableG-1 JP2referenceimagesandallowableerror49ISO/IEC 15444-4:2002(E) ISO/IEC 2002 All rights reserved viiForeword ISO (the Interna
19、tional 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 technical committees establishe
20、d 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 part in the work. In the fiel
21、d of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of the joint technical committee is to prepare International Standards. Draft
22、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 national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this pa
23、rt of ISO/IEC 15444 may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 15444-4 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia
24、and hypermedia information, in collaboration with ITU-T, but is not published as commontext at this time. ISO/IEC 15444 consists of the following parts, under the general title Information technology JPEG 2000 image coding system: Part 1: Core coding system Part 2: Extensions Part 3: Motion JPEG 200
25、0 Part 4: Conformance testing Part 5: Reference software Part 6: Compound image file format Part 7: Guideline of minimum support function of ISO/IEC 15444-1 Annexes B and C form a normative part of this part of ISO/IEC 15444. Annexes A, D, E, F and G are for information only. ISO/IEC 15444-4:2002(E)
26、 viii ISO/IEC 2002 All rights reserved IntroductionITU-T T.800 | ISO/IEC 15444-1 is a specificationthat describes animage compressionsystem that allows greatflexibility, not only for the compression of images but also for access into the codestream. The codestream provides anumber of mechanisms for
27、locating and extracting portions of the compressed image data for the purpose ofretransmission,storage,display,orediting.Thisaccessallowsstorageandretrievalofcompressedimagedataappropriatefora givenapplicationwithout decoding.This Recommendation | International Standard provides the framework, conce
28、pts, and methodology for testing and thecriteria tobe achievedtoclaim compliance toITU-T T.800| ISO/IEC 15444-1standard.The objective of standardizationin this field is to promote interoperability between JPEG 2000 encoders and decoders and to test these systems forcompliance to this specification.
29、Compliance testing is the testing of a candidate product for the existence of specificcharacteristics required by a standard. It involves testing the capabilities of an implementation against both thecompliance requirementsin therelevant standard andthe statement ofthe implementationscapability.The
30、purpose of this Recommendation | International Standard is to define a common test methodology, to provide aframework for specifying abstract test suites (ATS), and to define the procedures to be followed during compliancetesting.Any organization contemplating the use of test methods defined in this
31、 Recommendation | International Standard shouldcarefully consider the constraints on their applicability. Compliance testing does not include robustness testing,acceptancetesting, and performancetesting.1INFORMATION TECHNOLOGY JPEG2000IMAGECODINGSYSTEM PART 4: CONFORMANCETESTING1ScopeThis Recommenda
32、tion | International Standard specifies the framework, concepts, methodology for testing, and criteriato be achieved to claim compliance to ITU-T Recommendation T.800 | ISO/IEC 15444-1. It provides a framework forspecifying abstract test suitesandfor defining the procedurestobefollowed duringcomplia
33、ncetesting.ThisRecommendation|InternationalStandard specifies compliance testing procedures for encoding and decoding using JPEG 2000 Part 1 (ITU-TRecommendationT.800|ISO/IEC15444-1);specifiescodestreams,decodedimages,anderrormetricstobeusedwiththetestingprocedures;specifiesabstracttestsuites;provid
34、esguidanceforcreatinganencodercompliancetest.ThisRecommendation|International Standard doesnot includethe following tests:Acceptance testing: the process of determining whether an implementation satisfies acceptance criteria and enables theusertodetermine whether or not toaccept the implementation.T
35、his includes the planning andexecutionof severalkindsoftests(e.g.,functionality,quality,andspeed performance testing)that demonstratethat the implementationsatisfiestheuser requirements.Performance testing: measures the performance characteristics of an Implementation Under Test (IUT) such as itsthr
36、oughput,responsiveness,etc.,under variousconditions.Robustness testing: the processofdetermininghow well an implementation processesdatawhichcontains errors.2ReferencesThe following references document the technical details and legal codestream syntax that serve as a basis for thisRecommendation | I
37、nternational Standard. At the time of publication, the editions indicated were valid. AllRecommendations and Standards are subject to revision, and parties to agreements based on this Recommendation |International Standard are encouraged to investigate the possibility of applying the most recent edi
38、tion of theRecommendations and Standards listed below. Members of IEC and ISO maintain registers of currently validInternational Standards. The Telecommunication Standardization Bureau of the ITU maintains a list of currently validITU-T Recommendations. ITU-T Recommendation T.800 | ISO/IEC 15444-1,
39、Information technology JPEG 2000 ImageCoding System. ITU-T Recommendation T.800 | ISO/IEC 15444-1 Amendment 1, Information technology JPEG2000ImageCodingSystem,Amendment1. ITU-T Recommendation T.800 | ISO/IEC 15444-1 Amendment 2, Information technology JPEG2000ImageCodingSystem,Amendment2.INTERNATIO
40、NAL STANDARD ISO/IEC 15444-4:2002(E) ISO/IEC 2002 All rights reserved ISO/IEC 15444-4:2002(E)2 ITU-T Recommendation T.800 | ISO/IEC 15444-1 Corrigendum 1, Information technology JPEG2000ImageCodingSystem. ITU-T Recommendation T.800 | ISO/IEC 15444-1 Corrigendum 2, Information technology JPEG2000Imag
41、eCodingSystem. ITU-T Recommendation T.800 | ISO/IEC 15444-1 Corrigendum 3, Information technology JPEG2000ImageCodingSystem.3 DefinitionsFor the purposes of this Recommendation | International Standard, the following definitions apply. The definitions fromITU-T T.800| ISO/IEC 15444-1clause 3 also ap
42、ply tothis Recommendation| International Standard.3.1 abstract test suite: Genericcompliancetesting concepts and proceduresfora givenrequirement.3.2 arithmetic coder:An entropy coder that converts variable length strings to variable length codes (encoding)and vice versa (decoding).3.3 big endian: An
43、orderof bytes with themostsignificantbyte first.3.4 bit: A contractionofthe term “binarydigit”; aunit ofinformationrepresentedbya zero ora one.3.5 bit-depth:Thenumberofbitsrequired torepresent anoriginal component ofan image.3.6 bit-plane:A two-dimensional arrayofbits.InthisRecommendation |Internati
44、onalStandardabit-planerefersto all the bits of the same magnitude in all coefficients or samples. This could refer to a bit-plane in a component, tile-component, code-block,regionof interest,or other.3.7 bitstream:Theactual sequenceofbitsresultingfrom thecodingofasequenceofsymbols.It doesnotincludet
45、he markers or marker segments in the main and tile-part headers or the EOC marker. It does include any packet headersand instream markersandmarkersegments not foundwithinthemainortile-part headers.3.8 box: A portion of the file format defined by a length and unique box type. Boxes of some types mayc
46、ontainotherboxes.3.9 byte: Eight bits.3.10 Cclass: Defines a level of performance for a decoder. Also provides guidance for encoders to producecodestreams that are easilydecodable by compliant decoders.3.11 code-block: A rectangulargroupingofcoefficientsfrom thesame subbandofatile-component.3.12 cod
47、er: An embodiment of either anencoding or decoding process.3.13 codestream: A collection of one or more bitstreams and the main header, tile-part headers, and the EOCrequired for their decoding and expansion into image data. This is the image data in a compressed form with all of thesignalling neede
48、d todecode. This does not include the file format.3.14 coding pass: A procedure accessing coefficients in a code-block where the context and bit are determined.Typically there are 3 different coding passes for each bitplane, each coefficient will be represented in exactly one of thethree passes. For
49、 an encoder a coding pass examines coefficinets and agments a bitstream. For a decoder a coding passreads abitstream and updates coefficients.3.15 coefficient: Thevaluesthat arethe result ofatransformation.3.16 component: A two-dimensional array of samples. An image typically consists of several components (e.g.,red, green,andblue).3.17 compressed image data: Part or all of a codestream. Canalso refer to a collectionof bitstreams inpart or allof a codestream.3.18 compliance: Fulfillment of the specifi
