1 Definition
A Data Type including the Objects of a Ultrasound Scene, Ultrasound Scenes, and their arrangement in the Scene.
2 Functional Requirements
Ultrasound Scene Descriptors include Basic Scenes in addition to Objects.
3 Syntax
https://schemas.mpai.community/CAV2/V1.0/data/UltrasoundSceneDescriptors.json
4 Semantics
| Label | Size | Description |
| Header | N1 Bytes | Ultrasound Scene Descriptors Header |
| · Standard-Ultrasound Scene Descriptors | 9 Bytes | The characters “CAV-USD-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. |
| LiDARSceneDescriptorsID | N5 Bytes | Identifier of Ultrasound Scene Descriptors. |
| ObjectCount | N6 Bytes | Number of LiDARObjects in Scene. |
| LiDARSceneDescriptorsSpaceTime | N7 Bytes | Space and Time of the Ultrasound Scene Descriptors. |
| LiDARSceneObjects[] | N8 Bytes | Set of Ultrasound Objects. |
| – LiDARSceneObjectID | N9 Bytes | ID of Ultrasound Object. |
| – LiDARSceneObjectSpaceTime | N10 Bytes | Space Time of Ultrasound Object. |
| – LiDARSceneObjectAttributes[] | N11 Bytes | Attributes of Ultrasound Object. |
| – LiDARSceneObjectAttributeID | N12 Bytes | URI of Attribute Format Data of Ultrasound Object. |
| – LiDARSceneObjectAttributeFormatID | N13 Bytes | ID of Ultrasound Object Attribute Format. |
| – LiDARSceneObjectAttributeDataLength | N14 Bytes | Length of Ultrasound Object Attribute Format Data. |
| – LiDARSceneObjectAttributeDataURI | N15 Bytes | URI of Ultrasound Object Attribute Format Data. |
| DescrMetadata | N16 Bytes | Descriptive Metadata |
