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ISO/IEC 23090-5:2025 Information technology - Coded representation of immersive media - Part 5: Visual volumetric video-based coding (V3C) and video-based point cloud compression (V-PCC), 2025
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Abbreviated terms
- 5 Conventions [Go to Page]
- 5.1 General
- 5.2 Arithmetic operators
- 5.3 Logical operators
- 5.4 Relational operators
- 5.5 Bit-wise operators
- 5.6 Assignment operators
- 5.7 Other operators
- 5.8 Mathematical functions
- 5.9 Order of operation precedence
- 5.10 Variables, syntax elements, and tables
- 5.11 Text description of logical operations
- 5.12 Processes
- 6 Overall V3C characteristics, decoding operations, and post-decoding processes [Go to Page]
- 6.1 V3C characteristics
- 6.2 V3C bitstream characteristics, decoding operations, and post-decoding processes
- 7 Bitstream format, partitioning, and scanning processes [Go to Page]
- 7.1 General
- 7.2 V3C bitstream formats
- 7.3 NAL bitstream formats
- 7.4 Partitioning of atlas frames into tiles
- 8 Syntax and semantics [Go to Page]
- 8.1 Method of specifying syntax in tabular form [Go to Page]
- 8.1.1 General
- 8.1.2 Example of the syntax specification format
- 8.2 Specification of syntax functions and descriptors
- 8.3 Syntax in tabular form [Go to Page]
- 8.3.1 General
- 8.3.2 V3C unit syntax
- 8.3.3 Byte alignment syntax
- 8.3.4 V3C parameter set syntax
- 8.3.5 NAL unit syntax
- 8.3.6 Raw byte sequence payloads, trailing bits, and byte alignment syntax
- 8.3.7 Atlas tile data unit syntax
- 8.3.8 Supplemental enhancement information message syntax
- 8.4 Semantics [Go to Page]
- 8.4.1 General
- 8.4.2 V3C unit semantics
- 8.4.3 Byte alignment semantics
- 8.4.4 V3C parameter set semantics
- 8.4.5 NAL unit semantics
- 8.4.6 Raw byte sequence payloads, trailing bits, and byte alignment semantics
- 8.4.7 Atlas tile data unit semantics
- 8.4.8 Supplemental enhancement information message semantics
- 9 Decoding process [Go to Page]
- 9.1 General decoding process
- 9.2 Atlas data decoding process [Go to Page]
- 9.2.1 General atlas data decoding process
- 9.2.2 Decoding process for a coded atlas frame
- 9.2.3 Atlas NAL unit decoding process
- 9.2.4 Atlas tile header decoding process
- 9.2.5 Decoding process for patch data units
- 9.2.6 Decoding process of the block to patch map
- 9.2.7 Conversion of tile level patch information to atlas level patch information
- 9.3 Occupancy video decoding process
- 9.4 Geometry video decoding process
- 9.5 Attribute video decoding process
- 9.6 Packed video decoding process
- 9.7 Common atlas data decoding process [Go to Page]
- 9.7.1 General common atlas data decoding process
- 9.7.2 Decoding process for a coded common atlas frame
- 9.7.3 Common atlas NAL unit decoding process
- 9.7.4 Common atlas frame order count derivation process
- 9.8 Sub-bitstream extraction process [Go to Page]
- 9.8.1 General
- 9.8.2 V3C unit extraction
- 9.8.3 NAL unit extraction process
- 10 Pre-reconstruction process
- 11 Reconstruction process
- 12 Post-reconstruction process
- 13 Adaptation process
- 14 Parsing process [Go to Page]
- 14.1 General
- 14.2 Parsing process for 0-th order Exp-Golomb codes [Go to Page]
- 14.2.1 General
- 14.2.2 Mapping process for signed Exp-Golomb codes
- Annex A (normative) Profiles, tiers, and levels
- Annex B (informative) Post-decoding conversion to nominal video formats
- Annex C (informative) V3C sample stream format
- Annex D (normative) NAL sample stream format
- Annex E (normative) Atlas hypothetical reference decoder
- Annex F (normative) Supplemental enhancement information
- Annex G (informative) Volumetric usability information
- Annex H (normative) Video-based Point Cloud Coding
- Bibliography [Go to Page]
