Overview - ISO/IEC 24800-2:2021 (JPSearch Part 2)
ISO/IEC 24800-2:2021 is the part of the JPSearch family that specifies registration, identification and management of schema and ontology for image metadata. The standard defines interfaces and general rules that enable disparate systems to manage image repositories interoperably. It provides the JPSearch Core Metadata Schema, rules for representing image metadata, and a mechanism for publishing machine-readable translations between proprietary metadata schemas and the JPSearch core. JPSearch is explicitly extensible, and this document describes how to extend structures and rules beyond the core schema.
Key technical topics and requirements
- Interoperability interfaces: Specifications of interfaces that let different systems register, identify and manage metadata schemas for image repositories.
- JPSearch Core Metadata Schema: A defined core set of metadata types and elements used to describe images (e.g., person, place, rights, publisher, GPS positioning, region-of-interest and image identifiers).
- Schema wrapper and naming conventions: Rules for schema packaging, root elements and naming that support consistent registration and discovery.
- Machine‑readable translations: Requirements for publishing translation rules or links that map proprietary metadata terms to JPSearch Core terms, enabling automated crosswalks between vocabularies.
- Registration and request processes: Rules for registering metadata schemas, submitting translation rules and requesting schema information from repositories.
- Extensibility mechanisms: Defined method for extending the Core Metadata Schema and adding custom types or ontology links without breaking interoperability.
- Management of translation rules: Governance around maintaining, versioning and publishing translation mappings or references.
Practical applications and target users
Who benefits:
- Digital asset managers and archivists managing large image repositories
- Developers of DAM (Digital Asset Management), CMS, and image search platforms
- Metadata librarians and standards teams mapping proprietary schemas to a common model
- Software architects implementing interoperable image discovery, aggregation or federation services
- Institutions (museums, libraries, news agencies, stock photography services) needing cross-system metadata exchange
Common uses:
- Mapping proprietary image metadata to a shared core for federated search
- Registering and discovering metadata schemas and translation rules across repositories
- Enabling automated metadata crosswalks for ingestion, harvesting and aggregation
- Standardizing metadata representations for rights, location (GPS), people, objects and regions-of-interest
Related standards and keywords
Related JPSearch parts and metadata standards may be used alongside ISO/IEC 24800-2:2021 for full implementation. Keywords for discovery: ISO/IEC 24800-2:2021, JPSearch, image metadata schema, metadata translation, schema registration, ontology management, interoperable image repositories, core metadata schema, metadata crosswalks, extensible metadata standards.