Overview
ISO/IEC 6048-5:2026 defines the file format specifications for the JPEG AI learning-based image coding system, part of the broader international standard by ISO and IEC. This document sets out how JPEG AI codestreams-adhering to established coding standards (Rec. ITU-T T.840.1 | ISO/IEC 6048-1 and Rec. ITU-T T.840.2 | ISO/IEC 6048-2)-are embedded and managed in container file formats. These formats enable efficient storage and wide-ranging use of still images and motion sequences on computer platforms, including support for internet-based communications. The specification leverages existing robust file formats, notably the ISO Base Media File Format (ISOBMFF) and the High Efficiency Image File Format (HEIF), and extends them for compatibility with advanced JPEG AI encoding.
Key Topics
- Container File Format Integration: Specifies methods for encapsulating JPEG AI codestreams into industry-standard file containers, notably ISOBMFF and HEIF.
- Support for Images and Motion Sequences: Details container structures for both standalone images and timed image sequences (movies).
- File Structure and Object Definition: Adopts common conventions for file organization-using objects called boxes, facilitating compatibility and extensibility.
- Colour Specification: Ensures proper signalling of colour spaces for encoded images, utilizing coding-independent code points per ISO/IEC 23091-2.
- Interoperability and Flexibility: Promotes solutions that ignore unrecognized objects in files, facilitating future-proofing and broad application support.
- Sample Entries and Metadata: Outlines the arrangement of sample entries, description boxes, and configuration properties critical for decoding and playback.
- Conformance and Compatibility: Builds upon existing file format standards, resolving conflicts where necessary, and specifies requirements for reader and writer implementations.
Applications
- Digital Imaging: JPEG AI’s file format support is designed for digital cameras and image capture devices, enabling high-efficiency, high-quality photo storage and transfer.
- Professional Video: Suitable for applications in video capture, editing, and professional broadcasting, especially where high-quality, frame-based motion image sequences are required.
- Medical and Satellite Imaging: The format’s precision and extensible structure make it suitable for high-resolution, data-intensive fields like medical diagnostics and remote sensing.
- Error-Prone Environments: Robust design for use over networks with potential errors, such as wireless or internet streaming scenarios.
- Web and Multimedia Platforms: The standard supports internet-based communication, enabling seamless integration in modern cloud and web applications.
- Software Development: Provides clear guidelines for developing decoders, encoders, and viewers, ensuring interoperability across platforms and devices.
Related Standards
By adopting and extending proven container formats, ISO/IEC 6048-5:2026 ensures that JPEG AI codestreams can be utilized effectively in a vast range of imaging and multimedia applications, fostering innovation and compatibility in information technology and digital imaging workflows.