Overview
ISO/IEC 23090-6:2021/Amd 1:2024 is an amendment to the international standard for the coded representation of immersive media, focusing specifically on immersive media metrics applicable to V3C data and OMAF technologies. This amendment enhances the existing framework by defining new metrics and data types to support performance measurement and quality assessment in immersive media experiences involving Visual Volumetric Video-based Coding (V3C) and Omnidirectional Media Application Format (OMAF).
Developed jointly by ISO and IEC under the JTC 1/SC 29 technical committee, this standard update addresses the rapid growth of immersive media applications by improving metrics related to viewport rendering, viewpoint switching latency, and metadata handling. It ensures interoperability and performance consistency across immersive media systems globally.
Key Topics
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Immersive Media Metrics for V3C and OMAF: Introduction of metrics to evaluate the performance and quality of immersive media playback, particularly for V3C and OMAF coded data.
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New Data Types:
- ViewportDataType: Defines viewport representation for omnidirectional and V3C media, including parameters like camera type, field of view, and clipping planes.
- ViewpointDataType: Specifies viewpoint information with spatial coordinates and rotation using quaternion representation to accurately describe user perspectives.
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Viewpoint Switching Latency: Specification and measurement methodology for latency between switching viewpoints in immersive media streams, critical for user experience in VR/AR applications.
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Metadata Enhancements: Incorporation of additional metadata fields such as viewport camera info, viewport position, viewing space data, volumetric annotation, and scene object information to improve content description and analytics.
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Coordinate and Projection Systems: Standardized use of global reference coordinate systems and multiple projection types (ERP, perspective, orthographic) for defining viewport parameters.
Applications
The amendment applies primarily to immersive media technologies used in virtual reality (VR), augmented reality (AR), and mixed reality (MR) applications, enabling:
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High-Quality Immersive Video Streaming: Ensures consistent viewport rendering metrics and viewpoint switching latency measurements for smooth user experiences.
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Volumetric Video Coding: Supports volumetric video content distribution using V3C coding, enhancing spatial video representations for 3D immersion.
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Viewport-Adaptive Streaming: Facilitates efficient streaming of viewport-specific content with detailed metadata for adaptive delivery, reducing bandwidth usage.
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Real-Time User Interaction: Enables low-latency viewpoint switching crucial for responsive immersive environments in gaming, training simulations, and remote collaboration.
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Performance Benchmarking: Provides industry-standard metrics to measure and optimize immersive media clients, players, and delivery networks.
Related Standards
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ISO/IEC 23090-10: Coded representation of immersive media - Part 10: Carriage of visual volumetric video-based coding data, which defines the data transport and coding specifics for V3C content.
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OMAF (Omnidirectional Media Application Format): A multimedia format standard focusing on 360-degree video content, referenced within this amendment for immersive media player capabilities.
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IEEE 754: Standard for floating-point arithmetic used within this amendment to define numerical precision and encoding of viewport and viewpoint parameters.
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ISO/IEC 23090 Series: The broader framework of immersive media coding standards that cover various aspects of capture, coding, metadata, and rendering to provide comprehensive specifications for immersive content.
Keywords: immersive media metrics, ISO/IEC 23090-6, V3C data, OMAF, viewport data, viewpoint switching latency, volumetric video coding, immersive media performance, virtual reality standards, immersive media metadata, VR streaming metrics.
Open preview (PDF)Information technology — Coded representation of immersive media — Part 6: Immersive media metrics — Amendment 1: Immersive media metrics for V3C Data and OMAF
