BS ISO 16684-4:2024 - Ships and marine technology. Assessment of onboard cyber safety

Standard No.: BS ISO 16684-4:2024
Release Date: 2024
Published By: British Standards Institution (BSI)
Latest: BS ISO 16684-4:2024

Introduction

Core Values and Technological Breakthroughs of the Standard

BS ISO 16684-4:2024 standard realizes the standardized definition of Semantic Unit for the first time by extending the capabilities of XMP (Extensible Metadata Platform).

Traditional XMP	ISO 16684-4 Enhancement
File-level metadata	Sub-file-level content description
Single resource binding	Cross-resource semantic association
Static attribute description	Dynamic semantic annotation

Analysis of key technologies of semantic unit

4.1 Basic definition

Semantic unit (SU) is any content fragment identified by @id. Typical features include:

Supports Multimodal content such as text/image/audio/video
Can combine resources across file boundaries
Describe structure and semantics through XMP packages

4.2 Type system

The standard defines a three-dimensional classification system of SU's space-time-data:

{ "@id": "#chapter42", "target": { "source": "https://ctext.org/library.pl?file=77889", "selector": { "type": "TextPositionSelector", "start": 1024, "end": 2048 } } }

Implementation Recommendations

Prefer JSON-LD serialization (ISO 16684-3)
Complex resources use @list/@set array structures
Check syntax through the JSON-LD validator

Industry application prospects

This standard will significantly improve the metadata management capabilities of the following scenarios:

Digital humanities: semantic annotation of ancient books and documents (such as the case in Appendix A)
Medical imaging: cross-modal association of lesion areas
Industrial Internet of Things: time slice analysis of device data streams

BS ISO 16684-4:2024 Referenced Document

ISO 16684-1:2019 Graphic technology — Extensible metadata platform (XMP) — Part 1: Data model, serialization and core properties
ISO 16684-3:2021 Graphic technology - Extensible metadata platform (XMP) specification - Part 3: JSON-LD serialization of XMP

BS ISO 16684-4:2024 history

2024 BS ISO 16684-4:2024 Ships and marine technology. Assessment of onboard cyber safety - Use of XMP for semantic units

Ships and marine technology. Assessment of onboard cyber safety - Use of XMP for semantic units

Standard and Specification

Dimension	Example	Selector type
Spatial	Image area, PDF paragraph	SvgSelector
Time	Video fragment, audio interval	TimeFragment

BS ISO 16684-4:2024Ships and marine technology. Assessment of onboard cyber safety - Use of XMP for semantic units