Metadata

The following basic metadata schema is intended for the initial OAM release in which data sources are limited to RGB vertical aerial imagery. These datasets must be provided in georeferenced format and imagery should preferably be orthorectified.

Metadata	Type	Description	Required
UUID	string	Universally unique identifier. The UUID should be unique to each datasource entered in the OAM index. If the same datasource is entered twice (e.g. updated) then it will have different UUID for each instance.	Yes, assigned automatically by the system at submission.
DSID	string	A separate DSID (dataset ID?) could be used to group different versions of the same dataset.	Yes
Title	string	Human friendly title of the datasource	Yes
Description	string	Brief information about the datasource	No
Projection	string	CRS of the datasource in EPSG format	Yes
BBox	XY pairs	Pair of min and max coordinates in the CRS units	Yes
Coverage	polygon	Datasource footprint. Can be in GML or GeoJSON format, describing the actual footprint of the imagery	No
GSD	double	Average ground spatial distance (resolution) of the datasource imagery, expressed in meters	Yes
License	string	Usage license of the datasource. This determines visibility of the datasource for authenticated users	Yes
Contact	string	Name and email address of the data provider	Yes
Type	string	Type of datasource: raw georeferenced file(s), WMS, TMS, MBTiles	Yes
Source	URI	A list of endpoints which host or provided the datasource (e.g. pointer to TMS or WMS layer)	Yes
Acquisition Timestamp	Date	when was a datasource produced (i.e. originally acquired by a satellite)	Yes, automatic
Update Timestamp	Date	when was a datasource updated in the catalogue	Yes, automatic
Status	string	status of the datasource (online/offline, not available, deleted)	Yes, automatic