ISO/IEC 23090-22:2024

Overview - ISO/IEC 23090-22:2024 (Conformance for G‑PCC)

ISO/IEC 23090-22:2024 defines the conformance testing framework for Geometry‑based Point Cloud Compression (G‑PCC) as specified in ISO/IEC 23090-9. The document specifies a set of tests, procedures and reference test data (bitstream test suites) designed to indicate whether encoders and decoders conform to the normative requirements of G‑PCC. It uses the reference software decoder (see ISO/IEC 23090-21) to validate bitstreams and to provide a baseline for decoder behaviour.

Key topics and technical requirements

• Conformance scope: Tests assess both bitstream conformance and decoder conformance against ISO/IEC 23090-9 normative rules.
• Reference software: Conformance tests use the ISO/IEC 23090-21 reference decoder and reference encoder where applicable.
• Bitstream test suites: Standard includes electronic conformance bitstreams and a prescribed folder layout (e.g., *.bit, readme.md, *.md5, optional *_dec.ply and *.cfg).
• Test procedures:
  • Bitstream test: a bitstream claiming conformance must be decoded by the reference decoder without producing errors or non‑conformance messages.
  • Decoder test: decoders are validated using conformance bitstreams that exercise specific profile/level constraints and feature combinations.
• Output requirements: Decoders used in conformance testing must output integer point positions and follow the output conventions specified in ISO/IEC 23090-9.
• Feature coverage: Test bitstreams exercise a wide set of G‑PCC features including entropy bypass/continuation, parameter sets (GPS/APS), geometry coding methods (e.g., occupancy tree, QTBT, geometry scaling, predictive modes) and attribute coding options (RAHT, LoD, Lifting, predictors, SDC).
• Recommendations: While some parts are informative, the standard recommends that conforming decoders handle bitstream loss or corruption gracefully and resume decoding as soon as possible.

Applications - why this matters

• Ensures interoperability of point cloud encoders/decoders across devices and software.
• Supports deployment of point‑cloud workflows in VR/AR/MR, autonomous driving, mapping, cultural heritage digitization, industrial inspection, and immersive communications.
• Helps product developers and service providers demonstrate compliance for storage, streaming and real‑time delivery of point cloud content.

Who should use this standard

• G‑PCC encoder and decoder implementers and vendors
• Test labs and QA teams performing conformance and interoperability testing
• Product integrators, chipset and device manufacturers
• Standards bodies and certification programs

Related standards

• ISO/IEC 23090-9 - Geometry‑based Point Cloud Compression (normative)
• ISO/IEC 23090-21 - Reference software for G‑PCC (reference decoder/encoder used for testing)

Keywords: ISO/IEC 23090-22:2024, G‑PCC conformance, point cloud compression, conformance testing, bitstream, reference software decoder, ISO/IEC 23090-9.