ISO/IEC 23090-12:2023
(Main)Information technology — Coded representation of immersive media — Part 12: MPEG immersive video
Information technology — Coded representation of immersive media — Part 12: MPEG immersive video
This document specifies the syntax, semantics and decoding processes for MPEG immersive video (MIV), as an extension of ISO/IEC 23090-5. It provides support for playback of a three-dimensional (3D) scene within a limited range of viewing positions and orientations, with 6 Degrees of Freedom (6DoF).
Technologies de l'information — Représentation codée de média immersifs — Partie 12: Vidéo immersive MPEG
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Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 23090-12
First edition
2023-08
Information technology — Coded
representation of immersive media —
Part 12:
MPEG immersive video
Technologies de l'information — Représentation codée de média
immersifs —
Partie 12: Vidéo immersive MPEG
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
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Published in Switzerland
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© ISO/IEC 2023 – All rights reserved
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative reference .1
3 Terms and definitions . 1
4 Abbreviated terms . 3
5 Conventions . 3
6 Overall V3C characteristics, decoding operations, and post-decoding processes .4
7 Bitstream format, partitioning, and scanning processes . 4
7.1 General . 4
7.2 V3C bitstream formats . 4
7.3 NAL bitstream formats . 4
7.4 Partitioning of atlas frames into tiles . 4
7.5 Tile partition scanning processes . 4
7.6 Mapping of views to V3C components . 4
7.7 Sources and outputs . 5
8 Syntax and semantics . 6
8.1 Method of specifying syntax in tabular form . . 6
8.2 Specification of syntax functions and descriptors . 6
8.3 Syntax in tabular form . 6
8.3.1 General syntax. 6
8.3.2 V3C unit syntax . 6
8.3.3 Byte alignment syntax . 6
8.3.4 V3C parameter set syntax . 6
8.3.5 NAL unit syntax . . 6
8.3.6 Raw byte sequence payloads, trailing bits, and byte alignment syntax . 7
8.3.7 Atlas tile data unit syntax . 7
8.3.8 Supplemental enhancement information message syntax . 7
8.3.9 V3C MIV extension syntax in tabular form. 7
8.4 Semantics . 12
8.4.1 General semantics .12
8.4.2 V3C MIV extension semantics .12
8.4.3 Order of V3C units and association to coded information . 19
9 Decoding process .20
9.1 General decoding process .20
9.2 Atlas data decoding process .20
9.2.1 General atlas data decoding process . 20
9.2.2 Decoding process for a coded atlas frame . 20
9.2.3 Atlas NAL unit decoding process . 20
9.2.4 Atlas tile header decoding process . 20
9.2.5 Decoding process for patch data units . 20
9.2.6 Decoding process of the block to patch map . 21
9.2.7 Conversion of tile level patch information to atlas level patch information . 21
9.3 Occupancy video decoding process . 22
9.4 Geometry video decoding process . 22
9.5 Attribute video decoding process . 22
9.6 Packed video decoding process . 22
9.7 Common atlas data decoding process. 22
9.7.1 General common atlas data decoding process.22
9.7.2 Decoding process for a coded common atlas frame .23
9.7.3 Common atlas NAL unit decoding process . . 23
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© ISO/IEC 2023 – All rights reserved
9.7.4 Common atlas frame order count derivation process . .23
9.7.5 Common atlas frame MIV extension decoding process .23
9.8 Sub-bitstream extraction process .28
9.8.1 General .28
9.8.2 V3C unit extraction .28
9.8.3 NAL unit extraction process .28
9.8.4 Group extraction process .28
10 Pre-reconstruction process .28
11 Reconstruction process .28
12 Post-reconstruction process .28
13 Adaptation process .28
14 Parsing process .28
Annex A (normative) Profiles, tiers, and levels .29
Annex B (informative) Post-decoding conversion to nominal video formats .32
Annex C (informative) V3C sample stream format.34
Annex D (normative) NAL sample stream format .35
Annex E (normative) Atlas hypothetical reference decoder .36
Annex F (normative) Supplemental enhancement information .37
Annex G (informative) Volumetric usability information .53
Annex H (Informative) Overview of the rendering processes .54
Bibliography .71
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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/d
...
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