1 Definition
An Offline Map or HD map or 3D map is a roadmap with a high environmental fidelity representation.
2 Functional Requirements
An Offline Map reports the positions of pedestrian crossings, traffic lights/signs, barriers etc. with cm-level accuracy at the time the Offline Map was created.
3 Syntax
https://schemas.mpai.community/CAV2/V1.0/data/OfflineMapObject.json
4 Semantics
| Label | Size | Description |
| Header | N1 Bytes | Offline Map Object Header |
| – Standard-OfflineMapObject | 9 Bytes | The characters “CAV-OMO-V” |
| – Version | N2 Bytes | Major version – 1 or 2 characters |
| – Dot-separator | 1 Byte | The character “.” |
| – Subversion | N3 Byte | Minor version – 1 or 2 characters |
| MInstanceID | N4 Bytes | ID of the Virtual Space where Offline Map Object resides. |
| OfflineMapDataQualifier | N5 Bytes | Qualifier of the Offline Map currently being processed. |
| OfflineMapObject | N6 Bytes | Offline Map Object representing the chunk of data currently being processed by the Offline Map Scene Description AIM. |
| OfflineMapData | N7 Bytes | The Offline Map Qualifier |
| – OfflineMapDataLength | N8 Bytes | The Length of Offline Map Data in Bytes |
| – OfflineMapDataURI | N9 Bytes | URI of Offline Map Data |
| DescrMetadata | N10 Bytes | Descriptive Metadata |
