This page provides information about existing metadata schemas related to virtual reality and 3D digital models, supporting discoverability and management of VR-related content.
Current Metadata Guidelines
Currently, there are no commonly accepted metadata guidelines for 3D models. There is currently a project being conducted, Community Standards for 3D Preservation that will be releasing metadata standards over the next year.
The following information should help provide some guidance in deciding what metadata to capture when creating and working with 3D models.
- Paradata and Transparency (Metadata that documents the process of creation and use); Principles of Transparency in cultural heritage visualization are codified in the London Charter: http://www.londoncharter.org/principles.html
- Technical Metadata for 3D Models
Metadata Fields for Photogrammetry
Librarians at OU Libraries have been experimenting with photogrammetry techniques for producing 3D models and developing guidelines for documenting technical information. See below for a draft MODS schema for recording metadata for 3D models produced via photogrammetry.
Draft MODS Schema (Spring 2018)
Example MODS XML Document (Spring 2018)
The following schemas considered together may be useful for supporting some of the metadata needs of a 3D repository: CRM-dig (provenance metadata schema for documenting the production of digitized 2D and 3D objects); VRA Core or CARARE 2.0 schema (descriptive metadata schemas for visual materials; CARARE 2.0 was developed with 3D materials in mind, so it might be preferable); and METS (structural metadata describing relationships between different files and resources). The MPEG-V standard (released in 2011), which defines an exchange schema for information between virtual world environments, may also be worth investigating as a potential schema for documenting the OVAL platform itself, with implications for its long-term sustainability.