ISO/IEC 23090-6:2021/Amd 2:2025

Overview

ISO/IEC 23090-6:2021/Amd 2:2025 is an important amendment to the international standard focused on the coded representation of immersive media, specifically addressing immersive media metrics. Published by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC), this amendment introduces additional latencies and other improvements essential for precise measurement and evaluation of immersive media experiences.

Immersive media-encompassing virtual reality (VR), augmented reality (AR), and mixed reality (MR)-relies heavily on seamless interaction and minimal delays to provide users with realistic, engaging environments. This amendment enhances the existing framework by defining standardized latency metrics to improve viewpoint switching performance, which is vital for immersive content usability and user comfort.

Key Topics

• Viewpoint Switching Latency Metrics
  The amendment adds two specific latency metrics:

  • V3C Viewpoint Switching Latency: Measures delay when switching between spatial regions in V3C (Volumetric Video-based Coding), detailing origin and target viewpoints, measurement time, and delay in milliseconds.
  • General Viewpoint Switching Latency: Similar latency measurement applied to immersive viewpoint switching more broadly, tracking delays between initiating a viewpoint switch and content display.

• Latency Definition and Measurement
  Both latency metrics specify delays from the moment a viewpoint switch is initiated until the new viewpoint content is visually rendered. These metrics use precise wall-clock time for consistent real-time measurement.

• Improved Immersive Media Metrics
  These updates refine how immersive media experiences are quantified, supporting enhanced user experience and technical optimization.

Applications

• Virtual Reality (VR) and Augmented Reality (AR) Development
  Developers and engineers use these latency metrics to monitor and optimize end-to-end system responsiveness in VR and AR applications, reducing motion sickness and improving interaction smoothness.

• Immersive Content Streaming and Encoding
  Content providers and streaming platforms apply these metrics for evaluating the efficiency of immersive media codecs and ensuring timely viewpoint switching in volumetric videos and spatial media streams.

• Quality of Experience (QoE) Assessment
  System integrators and researchers adopt these standardized latency benchmarks to assess user experience and conform to industry standards in immersive media technology.

• Hardware and Display Calibration
  Immersive device manufacturers incorporate these latency measurements for hardware calibration, ensuring displays and sensors work in harmony to minimize perceived delay during viewpoint changes.

Related Standards

• ISO/IEC 23090 Series
  This amendment is part of the broader ISO/IEC 23090 family, which covers various aspects of immersive media coding, representation, and metrics.

• ISO/IEC JTC 1/SC 29 Standards
  The standard is developed under the Joint Technical Committee 1, Subcommittee 29, which focuses on coding of audio, picture, multimedia, and hypermedia information, ensuring compatibility with related multimedia coding standards.

• Latency and Synchronization Standards in Multimedia
  The latency definitions complement existing ISO/IEC standards on media synchronization and delivery, providing a complete framework for immersive content performance evaluation.

By implementing the improvements outlined in ISO/IEC 23090-6:2021/Amd 2:2025, industry professionals can achieve more reliable and consistent performance metrics for immersive media, ultimately leading to better user experiences and advanced immersive technology solutions. For further information and complete documentation, visit the ISO official website at www.iso.org.