ISO/IEC 23093-4:2023

INTERNATIONAL ISO/IEC
STANDARD 23093-4
Second edition
2023-11
Information technology — Internet of
media things —
Part 4:
Reference software and conformance
Technologie de l'information — Internet des objets media —
Partie 4: Logiciels de référence et conformité
Reference number
© ISO/IEC 2023
© ISO/IEC 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
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or ISO’s member body in the country of the requester.
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Email: copyright@iso.org
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Published in Switzerland
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© ISO/IEC 2023 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Abbreviated terms . 1
4 Reference software for ISO/IEC 23093-3 . 2
4.1 General . 2
4.2 ISO/IEC 23093-3 APIs for MTDL . 2
4.2.1 General . 2
4.2.2 APIs for MThing . 2
4.2.3 APIs for MSensor . 3
4.2.4 APIs for MActuator . 3
4.2.5 APIs for MAnalyser. 3
4.2.6 APIs for MStorage . 3
4.2.7 APIs for MManager . 4
4.2.8 APIs for MAggregator . 4
4.3 ISO/IEC 23093-3 APIs for MSOV . 4
4.4 ISO/IEC 23093-3 APIs for MACV . 4
4.5 ISO/IEC 23093-3 APIs for MAOV . 5
4.6 ISO/IEC 23093-3 binary representation APIs . 6
4.6.1 General . 6
4.6.2 Common APIs for binary representation . 6
4.6.3 Binary representation APIs for MTDL . 7
5 Conformance for ISO/IEC 23093-3 .9
5.1 General . 9
5.2 Schema-based conformance for ISO/IEC 23093-3 . 9
5.2.1 General . 9
5.2.2 Example of a valid MTDL instance test . 10
5.2.3 Example of an invalid MTDL instance test . 10
5.2.4 Example of a valid MSOV instance test . 10
5.2.5 Example of an invalid MSOV instance test . 10
5.2.6 Example of a valid MACV instance test . 10
5.2.7 Example of an invalid MACV instance test . 11
5.2.8 Example of a valid MAOV instance test . 11
5.2.9 Example of an invalid MAOV instance test . 11
Bibliography .12
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© ISO/IEC 2023 – All rights reserved

Foreword
ISO (the International 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 established 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.
The procedures used to develop this document and those intended for its further maintenance
are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria
needed for the different types of document should be noted. This document was drafted in
accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives or
www.iec.ch/members_experts/refdocs).
ISO and IEC draw attention to the possibility that the implementation of this document may involve the
use of (a) patent(s). ISO and IEC take no position concerning the evidence, validity or applicability of
any claimed patent rights in respect thereof. As of the date of publication of this document, ISO and IEC
had not received notice of (a) patent(s) which may be required to implement this document. However,
implementers are cautioned that this may not represent the latest information, which may be obtained
from the patent database available at www.iso.org/patents and https://patents.iec.ch. ISO and IEC shall
not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www.iso.org/iso/foreword.html. In the IEC, see www.iec.ch/understanding-standards.
This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information.
This second edition cancels and replaces the first edition (ISO/IEC 23093-4:2020), which has been
technically revised.
The main changes are as follows:
— modification of introduction;
— addition of new APIs;
— addition of binary reference software and its conformance streams.
A list of all parts in the ISO/IEC 23093 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user ’s national standards
body. A complete listing of these bodies can be found at www.iso.org/members.html and
www.iec.ch/national-committees.
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© ISO/IEC 2023 – All rights reserved

Introduction
The ISO/IEC 23093 series provides an architecture and specifies APIs and compressed representation
of data flowing between media things.
The APIs for the media things facilitate discovering other media things in the network, connecting, and
efficiently exchanging data between media things. The APIs also support transaction tokens to access
valuable functionalities, resources, and data from media things.
Information related to media things consists of characteristics and discovery data, setup information
from a system designer, raw and processed sensed data, and actuation information. The ISO/IEC 23093
series specifies input and output data formats for media things such as media sensors, actuators,
storage, and analysers. In addition, media analysers can process sensed data from media sensors to
produce analysed data, and the media analysers can be cascaded to extract semantic information.
This document contains the conformance and reference software implementing ISO/IEC 23093-3,
which includes the tools to describe data exchanged between media things and their APIs.
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© ISO/IEC 2023 – All rights reserved

INTERNATIONAL STANDARD ISO/IEC 23093-4:2023(E)
Information technology — Internet of media things —
Part 4:
Reference software and conformance
1 Scope
This document specifies the conformance and reference software implementing ISO/IEC 23093-3.
The information provided is applicable for determining the reference software modules available for
ISO/IEC 23093-3, understanding the functionality of the available reference software modules, and
utilising the available reference software modules.
Furthermore, this document provides means for conformance testing, i.e. bitstreams – XML and binary
descriptions – that conform or do not conform to ISO/IEC 23093-3.
2 Normative 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 amendments) applies.
ISO/IEC 23093-1, Information technology — Internet of media things — Part 1: Architecture
ISO/IEC 23093-2, Information technology — Internet of media things — Part 2: Discovery and
communication API
ISO/IEC 23093-3, Information technology — Internet of media things — Part 3: Media data formats and
APIs
3 Terms, definitions, and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 23093-1, ISO/IEC 23093-2,
and ISO/IEC 23093-3 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.2 Abbreviated terms
API application programming interface
MACV media actuator command vocabulary
MAOV media analyser output vocabulary
MSOV media sensor output vocabulary
MTDL media thing description language
© ISO/IEC 2023 – All rights reserved

4 Reference software for ISO/IEC 23093-3
4.1 General
This clause specifies the reference software for ISO/IEC 23093-3. The software is available at https://
1)
standards .iso .org/ iso -iec/ 23093/ -4/ ed -2/ en. The reference software is written in Java® and adopts
the package structure in Table 1.
Table 1 — The package structure of the IoMT reference software
Name Definition
org
Java package name for reference software provided by organisations such
as ISO/IEC, W3C, or similar.
org.iso
Java package name for reference software provided by ISO/IEC.
org.iso.mpeg
Java package name for reference software.
org.iso.mpeg.iomt
Java package name for reference software developing the ISO/IEC 23093 series.
- org.iso.mpeg.iomt.mtdl, org.iso.mpeg.iomt.msov, org.iso.
mpeg.iomt.macv, and org.iso.mpeg.iomt.maov for ISO/IEC 23093-3.
NOTE Code included within these packages can automatically generate tools
[1]
such as JAXB (Java Architecture for XML Binding) .
4.2 ISO/IEC 23093-3 APIs for MTDL
4.2.1 General
This subclause specifies the API to the ISO/IEC 23093-3 reference software. The API is defined in Java®
and adopts the package structures in Table 2.
Table 2 — MTDL reference softaware package structures
Name Definition
org.iso.mpeg.iomt.mtdl
Java package name for API to the ISO/IEC 23093-3 reference
software.
4.2.2 APIs for MThing
This subclause specifies classes related to the basic information of an MThing (Table 3).
Table 3 — Class types of MThing
Name Definition
MThingInfo
Java class containing essential elements and attributes for an
MThing.
MSensorType
Java class (i.e. superclass) that all media sensors shall extend.
MActuatorType
Java class (i.e. superclass) that all media actuators shall extend.
MAnalyserType
Java class (i.e. superclass) that all media analysers shall extend.
MStorageType
Java class (i.e. superclass) that all media storage shall extend.
MManagerType
Java class (i.e. superclass) that all MThing managers shall extend.
MAggregatorType
Java class (i.e. superclass) that all MThing aggregators shall extend.
1) Java® is the trademark of a product supplied by Oracle®. This information is given for the convenience of users
of this document and does not constitute an endorsement by ISO or IEC of the product named. Equivalent products
may be used if they can be shown to lead to the same results.
© ISO/IEC 2023 – All rights reserved

4.2.3 APIs for MSensor
This subclause specifies classes that are related to an MSensor (Table 4).
Table 4 — Class types of MSensor
Name Definition
SensedDataBaseType
Java class describing sensed data. All of the classes in the org.
iso.mpeg.iomt.msov shall extend this class.
SensorCapabilityListEnumType
Java class specifying the type of sensor capa-
bilities among allSensorCapabilityList,
availableSensorCapabilityList, and
appliedSensorCapabilityList.
SensorCapabilityListType
Java class describing a list of sensor capabilities.
SensorCapabilityPara
...