1. Definition | 2. Functional Requirements | 3. Syntax | 4. Semantics |
1. Definition
Descriptors that are based on performance data from the Virtual Environment (objects and avatars) and have a form that is suitable for the Performance Status AIM to extract interpretations to determine Cue Points.
2. Functional Requirements
Data acquired via the metaverse API.
- Avatar Descriptors (may be driven by performers or algorithms)
- Avatar instance
- Descriptors of Avatar motion
- Position and Orientation (Spatial Attitude)
- Face and Gestures
- Eye tracking (Face Descriptors)
- Object Descriptors – all non-avatar objects and associated parameters including:
- Object instance
- Position and Orientation (Spatial Attitude)
- Additional Descriptors if accessible via Metaverse API.
3. Syntax
https://schemas.mpai.community/XRV1/V1.0/data/VEPerformanceDescriptors.json
4. Semantics
Label | Size | Description |
Header | N1 Bytes | VE Performance Descriptors Header |
– Standard-VEPerformanceDescriptors | 9 Bytes | The characters “XRV-VFD-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. |
VEPerformanceDescriptorsID | N5 Bytes | Identifier of VE Performance Descriptors |
SpaceTime | N6 Bytes | Space-Time info of VE Performance Descriptors. |
VEPerformanceDescriptors | N7 Bytes | Set of VE Performance Descriptors |
– AvatarDescriptors[] | N8 Bytes | Set od Avatar Descriptors |
– AvatarID | N9 Bytes | Avatar ID |
– Spatial Attitude | N8 Bytes | Avatar Position and Orientation |
– Face Descriptors | N10 Bytes | Avatar Face Descriptors |
– Body Descriptors | N11 Bytes | Avatar Body Descriptors |
– ObjectDescriptors[] | N12 Bytes | Set of Object Descriptors |
– ObjectID | N5 Bytes | Object instance ID |
– Spatial Attitude | N13 Bytes | Position and Orientation |
– Other Descriptors | N14 Bytes | If accessible via Metaverse API. |
DescrMetaData | N15 Bytes | Descriptive Metadata |