1 Definition | 2 Functional Requirements | 3 Syntax |
4 Semantics | 5 Conformance Testing | 6 Performance Assessment |
1 Definition
A Data Type including the Objects of a scene, their sub-scenes, and their arrangement in the scene.
2 Functional Requirements
Scene Descriptors include
- Objects
- The Descriptors of the Scenes includes in the Scene called Sub-Scenes.
- Rights that may be exercised on the Scene.
Scenes may be hierarchical, i.e., they may contain Objects and Scenes.
Scene Descriptors name | Acronym | JSON |
3DModel Scene Descriptors | OSD-3BS | Link |
Audio Scene Descriptors | OSD-ABS | Link |
Audio-Visual Scene Descriptors | OSD-MBS | Link |
LiDAR Scene Descriptors | OSD-LBS | Link |
Offline Map Scene Descriptors | OSD-OBS | Link |
RADAR Scene Descriptors | OSD-RBS | Link |
Speech Scene Descriptors | OSD-SBS | Link |
Ultrasound Scene Descriptors | OSD-UBS | Link |
Visual Basic Descriptors | OSD-VBS | Link |
3 Syntax
https://schemas.mpai.community/OSD/V1.3/data/SceneDescriptors.json
4 Semantics
Label | Size | Description |
Header | N1 Bytes | Scene Descriptors Header |
– Standard-SceneDescriptors | 9 Bytes | The characters “OSD-SCD-V” |
– Version | N2 Bytes | Major version – 1 or 2 characters |
– Dot-separator | 1 Byte | The character “.” |
– Subversion | N3 Bytes | Minor version – 1 or 2 characters |
MInstanceID | N4 Bytes | Identifier of M-Instance. |
SceneDescriptorsID | N5 Bytes | Identifier of Scene Descriptors. |
SceneDescriptorsSpaceTime | N6 Bytes | Space and Time of Scene Descriptors. |
ObjectCount | N7 Bytes | Number of Objects in Scene. |
Objects[] | N8 Bytes | Set of Objects. |
– Object or ObjectID | N9 Bytes | Object in the Scene of its ID. |
– ObjectSpaceTime | N10 Bytes | Space Time of Object. |
SubSceneCount | N11 Bytes | Number of Sub-Scenes in Scene. |
SubScenes[] | N12 Bytes | Set of Sub-Scenes in the Scene. |
– SubScene or SubSceneID | N13 Bytes | Sub-Scene in the Scene or its ID. |
– SubSceneSpaceTime | N14 Bytes | Space Time of Sub-Scene. |
DescrMetadata | N15 Bytes | Descriptive Metadata |
5 Conformance Testing
A Data instance Conforms with Scene Descriptors (OSD-SCD) V1.3 if:
- The Data validates against the Scene Descriptors’ JSON Schema.
- All Data in the Scene Descriptors’ JSON Schema
- Have the specified type
- Validate against their JSON Schemas
- Conform with their Data Qualifiers.