1、 Reference numberISO/IEC 15938-5:2003/Amd.1:2004(E)ISO/IEC 2004Information technology Multimedia content description interface Part 5: Multimedia description schemes AMENDMENT 1: Multimedia description schemes extensions Technologies de linformation Interface de description du contenu multimdia Part
2、ie 5: Schmas de description multimdia AMENDEMENT 1: Extensions de schmas de description multimdia Amendment 1:2005 toNational Standard of CanadaCAN/CSA-ISO/IEC 15938-5:04Amendment 1:2004 to International Standard ISO/IEC 15938-5:2003 has been adopted withoutmodification (IDT) as Amendment 1:2005 to
3、CAN/CSA-ISO/IEC 15938-5:04. This Amendment was reviewedby the CSA Technical Committee on Information Technology (TCIT) under the jurisdiction of the StrategicSteering Committee on Information Technology and deemed acceptable for use in Canada.October 2005ISO/IEC 15938-5:2003/Amd.1:2004(E) PDF discla
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6、 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 2004 All
7、 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 o
8、f 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.org Web www.iso.org ii ISO/IEC 2004 All rights reservedISO/IEC 15938-5:2003/Amd.1:2004(E) ISO/IEC 2004 All rights reserved iiiForeword ISO (the International Organ
9、ization 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 established by the res
10、pective 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 field of informa
11、tion 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 2. The main task of the joint technical committee is to prepare International Standards. Draft Internationa
12、l 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 document may b
13、e the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. Amendment 1 to ISO/IEC 15938-5:2003 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and h
14、ypermedia information. ISO/IEC 15938-5:2003/Amd.1:2004(E) ISO/IEC 2004 All rights reserved 1Information technology Multimedia content description interface Part 5: Multimedia description schemes AMENDMENT 1: Multimedia description schemes extensions Except where noted otherwise, add the content of t
15、he following subclauses at the end of the corresponding subclauses of ISO/IEC 15938-5:2003. 4.2.1 Introduction This subclause also specifies extensions of two tools defined in ISO/IEC 15938-5. The AudioDType and AudioDSType are extended by providing each with an optional attribute that denotes which
16、 audio channels are used in computing the values of the Audio D and Audio DS, respectively. The convention of handling multi-channel signals (e.g. 5.1 surround format) is given in more details in ISO/IEC 15938-4. In 4.2.2 Base types syntax, replace the syntax definition of Audio D and Audio DS with
17、the following definition, which adds new attributes: In 4.2.3 Base types semantics, replace the semantics definition of Audio D and Audio DS with the following definition, which adds new attributes: Semantics of the AudioDType: ISO/IEC 15938-5:2003/Amd.1:2004(E) 2 ISO/IEC 2004 All rights reservedNam
18、e Definition AudioDType Describes audio features of multimedia content (abstract). AudioDType extends DType and provides a base abstract type for audio Descriptors. channels Indicates which audio channels are used for computing the value of the Audio D (optional). The channels descriptor applies for
19、 a multi-channel audio signal. If a value for channels is not given, it is assumed by default that all audio channels are used to compute the value of the Audio D. The channels attribute is specified as an integerVector that lists the relevant audio channel numbers used for computing the Audio D. Se
20、mantics of the AudioDSType: Name Definition AudioDSType Describes audio concepts and audio features of multimedia content (abstract). AudioDSType extends DType and provides a base abstract type for audio Description Schemes. channels Indicates which audio channels are used for computing the value of
21、 the Audio DS (optional). The channels descriptor applies for a multi-channel audio signal. If a value for channels is not given, it is assumed by default that all audio channels are used to compute the value of the Audio DS. The channels attribute is specified as an integerVector that lists the rel
22、evant audio channel numbers used for computing the Audio DS. Add the following subclause 4.2.4 after 4.2.3. 4.2.4 Base types examples The following example shows the use of AudioDType and the channels attribute in describing features of a segment of audio using AudioWaveform D (defined in ISO/IEC 15
23、398-4). The example shows that audio channels 1, 2, and 3 are used for computing the first instance of the AudioWaveform D, audio channels 3 and 4 are used for computing the second instance of the AudioWaveform D, and audio channel 6 is used for computing the final instance of the AudioWaveform D. A
24、udio surround ISO/IEC 15938-5:2003/Amd.1:2004(E) ISO/IEC 2004 All rights reserved 3Description for Surround Sound channels: 1 = center (C), 2= left (L), 3 = right (R), 4 = left surround (LS), 5 = right surround (RS), 6 = low frequency effect (LFE) 2.14 0.59 -2.65 0.58 1.15 0.63 -2.44 1.93 3.14 1.01
25、-1.35 1.23 In 4.4.5.1 Introduction, replace the content with the following sentence. This subclause specifies tools for describing different multimedia content entities. The different multimedia content entity tools correspond to the different types of multimedia content: image, video, audio, AV dat
26、a, mixed multimedia content, signals, ink content, edited video, linguistic content, and text content. 4.4.5.2 Multimedia content entity description tools syntax ISO/IEC 15938-5:2003/Amd.1:2004(E) 4 ISO/IEC 2004 All rights reserved4.4.5.3 Multimedia content entity description tools semantics Semanti
27、cs of the LinguisticType: Name Definition LinguisticType Multimedia content entity for describing linguistic content. Linguistic content is textual,spoken, visually written, and other information that is regarded as natural-language expressions or utterances. LinguisticType extends MultimediaContent
28、Type. Linguistic Describes the linguistic content. The linguistic content may correspond to a full linguistic document or a segment. Linguistic is of type LinguisticDocumentType, which is defined in 7.11. Semantics of the TextType: Name Definition TextType Multimedia content entity for describing te
29、xtual information. The element Textdescribes 1-D data stream representing characters of textual information. TextType extends MultimediaContentType. Text Describes the textual information. Text is of type TextSegmentType. 4.4.5.4 Multimedia content entity description tools examples The following exa
30、mple shows the use of the multimedia content entity LinguisticType for describing linguistic content. The example describes the linguistic annotation of the sentence: “Tom visited his mother.” Tom visited his mother . The following example shows the use of the multimedia content entity TextType for
31、describing a textual document corresponding to a movie review. ISO/IEC 15938-5:2003/Amd.1:2004(E) ISO/IEC 2004 All rights reserved 5file:/review.txt Movie review 6.5.1 Introduction This subclause also defines a stream locator. Add the following subclause 6.5.7 after subclause 6.5.6. 6.5.7 StreamLoca
32、tor datatype 6.5.7.1 Introduction The StreamLocator describes the location of data within a stream. 6.5.7.2 StreamLocator datatype syntax 6.5.7.3 StreamLocator datatype semantics Semantics of the StreamLocatorType: Name Definition StreamLocatorType Specifies the location of a data stream such as dat
33、a representing textual information. Localization within a data stream can be specified using the StreamSection element. ISO/IEC 15938-5:2003/Amd.1:2004(E) 6 ISO/IEC 2004 All rights reservedName Definition StreamSection Specifies the localization of a section within a given data stream using a number
34、 of units to specify the start and length. If only the start is specified, the segment is “open-ended“, i.e., the end of the section corresponds to the end of the located media data. Units can be for instance characters or bytes Replace 7.4.2.1, 7.4.2.2 and 7.4.2.3 with the following. 7.4.2.1 Introd
35、uction The SubjectClassificationScheme DS allows encoding of standard thesauri and classification schemes such as Library of Congress Thesaurus of Graphical Material (TGM)-I and Library of Congress Subject Headings (LCSH). The SubjectClassificationScheme DS generically accommodate more complex thesa
36、uri and classification schemes than those supported by the Classification Scheme DS defined in ISO/IEC 15938-5. The SubjectClassificationScheme DS extends the ClassificationSchemeBaseType DS. The SubjectClassificationScheme DS includes attributes defined in the ClassificationScheme DS, but also furt
37、her accommodates notes and subdivisions, which cannot be encoded using the ClassificationScheme DS. In order to accommodate subdivisions, the SubjectClassificationScheme DS defines a subdelim tag definition. The subdelim tag is used to allow subdivision of defined terms by providing additional terms
38、 that subdivide those concepts. For example, in TGM I subdivisions are preceded by two tag characters and the tag character is often used to join terms in a description that subdivide the main term (e.g., Gambling-United States-1910-1920). In order to accommodate the use of subdivisions, a modificat
39、ion of the resolution procedure for controlled terms and classification schemes is proposed in order to allow the addition of subdivision terms to any controlled term. 7.4.2.2 ClassificationScheme DS syntax The following defines the syntax of the SubjectClassificationScheme DS: 7.4.2.3 Classificatio
40、nScheme DS semantics Semantics of the SubjectClassificationScheme Type: Name Definition SubjectClassificationScheme Type Describes a set of subject terms along with their meaning, relations, notes and subdivisions.SubjectClassificationScheme Type extends ClassificationSchemeBaseType. ISO/IEC 15938-5
41、:2003/Amd.1:2004(E) ISO/IEC 2004 All rights reserved 7Name Definition Term Describes a term in the subject classification scheme. The termID for each term shall be unique within the classification scheme. subdelim Describes a tag to be used in the subject classification scheme for subdividing subjec
42、ts. The tag must not be a substring of any of the terms within the classification scheme. Add the following subclause 7.4.2.5.3 after subclause 7.4.2.5.2. 7.4.2.5.3 SubjectClassificationScheme DS examples 7.4.2.5.3.1 Example 1 The following example shows the encoding of an excerpt of Library of Cong
43、ress Thesaurus of Graphical Material (TGM)-I using the proposed SubjectClassificationScheme DS. Notice that the subdivisions and notes of TGM, which could not be adequately expressed using the ClassificationScheme DS defined in ISO/IEC 15938-5 can now be expressed with the SubjectClassificationSchem
44、e DS. Committees -nationality-country or state-city Public Note Body of persons appointed for a special function. Broader Term Organizations Related Term Delegations Governmental investigations Juries The following describes the TGM-I excerpt using SubjectClassificationScheme DS: Committees -nationa
45、lity-country or state-city Body of persons appointed for a special function. Organizations Delegations Organizations Juries ISO/IEC 15938-5:2003/Amd.1:2004(E) 8 ISO/IEC 2004 All rights reserved7.4.2.5.3.2 Example 2 The following example shows the encoding of an excerpt of Library of Congress Thesaur
46、us of Graphical Material (TGM)-I using the proposed SubjectClassificationScheme DS. In this example, the types of notes and relationships are described using externally defined classification schemes, i.e., using urn:example:TGMI:Notes and urn:example:TGMI:Relations, respectively. This demonstrates
47、the capability of the SubjectClassificationScheme DS to be generalized to accommodate other schemes for defining notes and relations between subjects and terms. Diners (Restaurants) -country or state-city Public Note Includes activities and structures. Broader Term Restaurants The following describe
48、s the TGM-I excerpt using SubjectClassificationScheme DS: Diners (Restaurants) -country or state-city Includes activities and structures. Restaurants 7.4.2.5.3.3 Example 3 The following example shows the encoding of an excerpt of Library of Congress Subject Headings using the proposed SubjectClassif
49、icationScheme DS. Construction Equipment (Indirect) (TH900) sa Boring machinery Building-Tools and implements Scrapers (Earthmoving machinery) x Builders plant Construction Industry-Equipment and supplies xx Building Building-Tools and implements Machinery - Brakes (TH900) - Drawing See Construction equipment-Drawings - Drawings x Construction equipment-Drawing xx Mechanical drawing - Trade and manufacture (Indirect) Construction equipment operators see Construction machinery operators ISO/IEC
