ISO/IEC 14496-27:2009/Amd 4:2012

Information technology — Coding of audio-visual objects — Part 27: 3D Graphics conformance — Amendment 4: Conformance for efficient representation of 3D meshes with multiple attributes

Technologies de l'information — Codage des objets audiovisuels — Partie 27: Conformité aux graphiques 3D — Amendement 4: Conformité pour une représentation efficace de mailles en 3D avec attributs multiples

General Information

• Status: Published
• Publication Date: 17-Apr-2012
• ICS: 35.040 - Information coding
• ICS: 35.040.40 - Coding of audio, video, multimedia and hypermedia information
• Technical Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Drafting Committee: ISO/IEC JTC 1/SC 29 - Coding of audio, picture, multimedia and hypermedia information
• Current Stage: 6060 - International Standard published
• Start Date: 18-Apr-2012
• Due Date: 20-Apr-2014
• Completion Date: 20-Apr-2014

Relations

• Amends: ISO/IEC 14496-27:2009 - Information technology — Coding of audio-visual objects — Part 27: 3D Graphics conformance
• Effective Date: 21-Aug-2021

Overview

ISO/IEC 14496-27:2009/Amd 4:2012 is an important amendment to the well-established ISO/IEC 14496 standard, which addresses coding of audio-visual objects. This amendment focuses specifically on 3D Graphics conformance, introducing new guidelines for the efficient representation of 3D meshes with multiple attributes. Developed by the Joint Technical Committee ISO/IEC JTC 1, this standard sets out detailed requirements for the conformance and interoperability of 3D graphics content, particularly where meshes contain attributes such as colors, normal vectors, or texture coordinates.

Key Topics

• Region-Based Representation
  The amendment introduces the IndexedRegionSet (IRS) node, an enhancement over the classic IndexedFaceSet (IFS). By associating regions with mesh faces, it enables more natural grouping and efficient coding of 3D meshes, particularly those where vertices have multiple attributes.

• Conformance Points
  To ensure compatibility and standard compliance, the amendment specifies precise conformance points for decoders handling IRS and Region nodes. This covers both bitstream conformance (correct syntax) and terminal conformance (proper decoding process).

• Bitstream and Terminal Conformance Testing
  The amendment lays out normative test procedures using specific bitstream test suites. These ensure a pass/fail diagnosis for syntax conformance, requiring no tolerance for errors, and reference the decoding processes detailed in ISO/IEC 14496-16:2011/Amd.1:2011.

Applications

This amendment holds significant value for industries and technologies that rely on 3D mesh representation and rendering, such as:

• Computer Graphics and Animation
  Enables more efficient and standardized workflows for representing 3D models in applications like animation films, video games, and VR experiences.

• 3D Visualization and Simulation
  Supports engineering, scientific, and architectural visualization by enabling robust exchange and interoperability of 3D mesh data with multiple attributes.

• Digital Asset Creation and Exchange
  Facilitates the consistent encoding and decoding of complex 3D assets, allowing for seamless sharing across different software platforms and devices.

• Multimedia Content Distribution
  Improves efficiency in delivery of 3D graphics over the web or broadcast, where compressed, standards-based assets are essential for broad compatibility and quality assurance.

Related Standards

For comprehensive implementation and understanding, this amendment should be considered alongside related standards:

• ISO/IEC 14496-27:2009 - Coding of audio-visual objects - Part 27: 3D Graphics conformance.
• ISO/IEC 14496-16:2011/Amd.1:2011 - Specifies the detailed syntax and decoding requirements for IRS and Region nodes referenced in conformance checks.
• ISO/IEC 14496 Series - A family of standards detailing coding of audio-visual objects, supporting a wide range of multimedia applications.

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ISO/IEC 14496-27:2009/Amd 4:2012 promotes greater efficiency and interoperability within 3D graphics encoding by providing clear benchmarks for the handling of meshes with multiple attributes. By adhering to these conformance guidelines, developers and manufacturers can ensure their systems deliver high-quality, compatible 3D content across varied platforms and use cases. For those involved in multimedia technology, animation, or 3D asset management, this standard represents a critical step toward more robust and reliable 3D mesh representation in modern digital workflows.

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 14496-27
First edition
2009-12-15
AMENDMENT 4
2012-04-15
Information technology — Coding of
audio-visual objects —
Part 27:
3D Graphics conformance
AMENDMENT 4: Conformance for efficient
representation of 3D meshes with multiple
attributes
Technologie de l'information — Codage des objets audio-visuels —
Partie 27: Conformité aux graphiques 3D
AMENDEMENT 4: Conformité pour une représentation efficace de
mailles en 3D avec attributs multiples

Reference number
ISO/IEC 14496-27:2009/Amd.4:2012(E)
©
ISO/IEC 2012
ISO/IEC 14496-27:2009/Amd.4:2012(E)

©  ISO/IEC 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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ISO's member body in the country of the requester.
ISO copyright office
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Published in Switzerland
ii © ISO/IEC 2012 – All rights reserved

ISO/IEC 14496-27:2009/Amd.4:2012(E)
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. In the field 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 2.
The main task of the joint technical committee is to prepare International Standards. 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 national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
Amendment 4 to ISO/IEC 14496-27:2009 was prepared by Joint Technical Committee ISO/IEC JTC 1,
Information Technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia
information.
© ISO/IEC 2012 – All rights reserved iii
...

INTERNATIONAL ISO/IEC
STANDARD 14496-27
First edition
2009-12-15
AMENDMENT 4
2012-04-15
Information technology — Coding of
audio-visual objects —
Part 27:
3D Graphics conformance
AMENDMENT 4: Conformance for efficient
representation of 3D meshes with multiple
attributes
Technologies de l'information — Codage des objets audiovisuels —
Partie 27: Conformité aux graphiques 3D
AMENDEMENT 4: Conformité pour une représentation efficace de
mailles en 3D avec attributs multiples

Reference number
ISO/IEC 14496-27:2009/Amd.4:2012(E)
©
ISO/IEC 2012
ISO/IEC 14496-27:2009/Amd.4:2012(E)

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Published in Switzerland
ii © ISO/IEC 2012 – All rights reserved

ISO/IEC 14496-27:2001/Amd.4:2012(E)
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