ISO/IEC 14496-4:2004/Amd 23:2008
(Amendment)Information technology - Coding of audio-visual objects - Part 4: Conformance testing - Amendment 23: Synthesized texture conformance
Information technology - Coding of audio-visual objects - Part 4: Conformance testing - Amendment 23: Synthesized texture conformance
Technologies de l'information — Codage des objets audiovisuels — Partie 4: Essai de conformité — Amendement 23: Conformité de texture synthétisée
General Information
- Status
- Published
- Publication Date
- 06-Apr-2008
- Current Stage
- 6060 - International Standard published
- Start Date
- 07-Apr-2008
- Due Date
- 10-Jan-2010
- Completion Date
- 07-Jan-2008
Relations
- Effective Date
- 06-Jun-2022
- Effective Date
- 15-Apr-2008
Overview
ISO/IEC 14496-4:2004/Amd 23:2008 is an important amendment to the international standard for coding audio-visual objects, specifically addressing conformance testing for synthesized texture coding. Developed by the ISO/IEC Joint Technical Committee 1 (JTC 1), this amendment enhances Part 4 of the MPEG-4 standard, which focuses on conformance testing to ensure interoperability and compliance across multimedia coding implementations.
This amendment introduces synthesized texture (ST) conformance requirements and expands the framework for testing profiles relevant to texture synthesis in multimedia streams. It includes new object type indications and provides an extensive set of test sequences designed to validate conformity for various synthesized texture elements such as edges, ridges, stripes, patches, and animations.
Key Topics
Synthesized Texture Conformance
Amendment 23 adds synthesized texture conformance as a core area, ensuring tested implementations correctly handle complex texture coding scenarios, supporting quality and interoperability in visual content delivery.StreamType Extensions
Modifications to theobjectTypeIndicationfor streamType0x04are introduced to include0x07among acceptable values. This defines the supported streams for synthesized texture coding, accommodating new coding profiles.Test Sequences and Methods
A comprehensive set of 38 test sequences (e.g.,ST_001_BG_GraytoST_038_Venice) is specified, covering baseline backgrounds, complex color patches, edges, ridges, patches, and object animations. These sequences test various synthesized texture states under realistic conditions to confirm standard compliance.Detailed Feature Coverage
Test sequences systematically cover essential synthesized texture components:- Background points with various color distributions
- Sharp and soft edges
- Narrow and wide ridges with color profiles
- Stripes with blended and multi-color profiles
- Complex patch arrangements
- Animation transformations such as object rotation, translation, bending, and stretching
- Skeleton bones for articulated objects and key frame handling
Applications
Multimedia Codec Development
Ensures codec developers implement synthesized texture coding compliant with industry standards, enabling interoperable encoding and decoding of advanced visual textures in streaming media, gaming, and video editing software.Quality Assurance and Testing
Provides conformance test suites enabling manufacturers and service providers to verify their products correctly process synthesized textures, maintaining visual fidelity and consistent user experiences.Digital Broadcasting and Streaming
Supports broadcasters and streaming platforms in adopting standardized texture coding for efficient and high-quality multimedia delivery, optimizing bandwidth usage without compromising visual effects.3D Graphics and Animation
Facilitates reliable coding and transmission of animated textures and object transformations, critical for interactive graphics, virtual reality content, and animation pipelines requiring standardized texture compression.
Related Standards
ISO/IEC 14496-1 to 3 and 5 to 20
Other parts of the MPEG-4 standard series cover general multimedia framework, systems, visual coding, and supplementary enhancements that complement conformance testing for synthesized textures.ISO/IEC JTC 1 SC 29 Series
Joint technical committee work related to coding audio, picture, multimedia, and hypermedia information establishes foundational technologies linked to this amendment.ISO/IEC 23001 Series
Covers systems and application programming interfaces for coded audiovisual content complementing texture coding methodologies.ITU-T H.264 / MPEG-4 AVC Standards
Video coding standards widely used in conjunction with MPEG-4 conformance testing schemes for comprehensive multimedia coding assurance.
Keywords: ISO/IEC 14496-4 Amendment 23, synthesized texture conformance, MPEG-4 conformance testing, multimedia coding standard, synthesized texture test sequences, texture coding interoperability, audio-visual object coding, multimedia codec compliance, texture synthesis verification, synthesized texture animation standards.
Frequently Asked Questions
ISO/IEC 14496-4:2004/Amd 23:2008 is a standard published by the International Organization for Standardization (ISO). Its full title is "Information technology - Coding of audio-visual objects - Part 4: Conformance testing - Amendment 23: Synthesized texture conformance". This standard covers: Information technology - Coding of audio-visual objects - Part 4: Conformance testing - Amendment 23: Synthesized texture conformance
Information technology - Coding of audio-visual objects - Part 4: Conformance testing - Amendment 23: Synthesized texture conformance
ISO/IEC 14496-4:2004/Amd 23:2008 is classified under the following ICS (International Classification for Standards) categories: 35.040 - Information coding; 35.040.40 - Coding of audio, video, multimedia and hypermedia information. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO/IEC 14496-4:2004/Amd 23:2008 has the following relationships with other standards: It is inter standard links to ISO/IEC 14496-4:2004; is excused to ISO/IEC 14496-4:2004. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
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Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 14496-4
Second edition
2004-12-15
AMENDMENT 23
2008-04-15
Information technology — Coding
of audio-visual objects —
Part 4:
Conformance testing
AMENDMENT 23: Synthesised texture
conformance
Technologies de l'information — Codage des objets —
Partie 4: Essai de conformité
AMENDEMENT 23: Conformité de texture synthétisée
Reference number
ISO/IEC 14496-4:2004/Amd.23:2008(E)
©
ISO/IEC 2008
ISO/IEC 14496-4:2004/Amd.23:2008(E)
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...
INTERNATIONAL ISO/IEC
STANDARD 14496-4
Second edition
2004-12-15
AMENDMENT 23
2008-04-15
Information technology — Coding
of audio-visual objects —
Part 4:
Conformance testing
AMENDMENT 23: Synthesized texture
conformance
Technologies de l'information — Codage des objets audiovisuels —
Partie 4: Essai de conformité
AMENDEMENT 23: Conformité de texture synthétisée
Reference number
ISO/IEC 14496-4:2004/Amd.23:2008(E)
©
ISO/IEC 2008
ISO/IEC 14496-4:2004/Amd.23:2008(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the 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 2008
All 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
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ii © ISO/IEC 2008 – All rights reserved
ISO/IEC 14496-4:2004/Amd.23:2008(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 23 to ISO/IEC 14496-4:2004 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 2008 – All rights reserved iii
ISO/IEC 14496-4:2004/Amd.23:2008(E)
Information technology — Coding of audio-visual objects —
Part 4:
Conformance testing
AMENDMENT 23: Synthesized texture conformance
Modify 4.3.3.1.6.1 (Structure) as follows:
Add 0x07 objectTypeIndication to the list of supported streams for streamType 0x04. The sentence
should now state:
If streamType = 0x04, the objectTypeIndication attribute shall take on one of the values from 0x07,
0x20, 0x60-0x65, 0x6A and 0xFF. The last value shall indicate that no profile is specified.
In 4.4.3.1, add the following row at the end of Table 4 and renumber the first column:
N° Feature Reference of Test sequence and associated method
ST_001_BG_Gray through ST_038_Venice see details in
1 SynthesizedTexture
annex X
In 4.4.3.3, add the following rows at the end of Table 6:
Name Provider Content
ST_001_BG_Gray Vimatix Background points only, each point carries same color
(gray)
ST_002_BG_Gray_Green 2 types of background color points: gray and green
Vimatix
ST_003_BG_Gray_Green_Red 3 types of background color points: red green and gray
Vimatix
ST_004_BG_Grey_Green_Red_ 4 types of background color points: red green, blue and
Vimatix
Blue gray
ST_005_Edge_Rect_Red Red Rectangle (Edges) on top of the gray background
Vimatix
ST_006_Edge_Rect_Red_ Widened color profiles of the Edges cover surrounding of
Vimatix
Wide_Color_Profiles the rectangle
ST_007_Ridge A narrow velvet Ridge is added to previous scene
Vimatix
© ISO/IEC 2008 – All rights reserved 1
ISO/IEC 14496-4:2004/Amd.23:2008(E)
Name Provider Content
ST_008_Ridge_Wide_Color_Pro Ridge color profile width is wider and spans over more
Vimatix
files pixels
ST_009_Double_Edge_Narrow Ridge of stream ST_007_Ridge is converted Edge
Vimatix
ST_010_Double_Edge_Wide The Ridge o
...
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