| 1 Definition | 2 Functional Requirements | 3 Syntax |
| 4 Semantics | 5 Conformance Testing | 6 Performance Assessment |
1 Definition
Body Descriptors is a Data Type digitally representing a human or a humanoid.
Gesture Descriptors is a Data Type representing the subset of Body Descriptors selected by an application to convey Gesture information.
2 Functional Requirements
Body Descriptors should enable the representation of the joints of a body.
3 Syntax
https://schemas.mpai.community/PAF/V1.5/data/BodyDescriptorsObject.json
4 Semantics
| Label | Size | Description |
| Header | N1 Bytes | Body Descriptors Object Header. |
| – Standard-BodyDescriptorsObject | 9 Bytes | The characters “OSD-BDO-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 |
| M-InstanceID | N4 Bytes | ID of the Virtual Space where the Body is located. |
| BodyDescriptorsObjectID | N5 Bytes | Identifier of Body Descriptors. |
| BodyDescriptorsSpaceTime | N6 Bytes | Space-Time information of Body in the Virtual Space |
| BodyDescriptorsData | N7 Bytes | Data of Body Descriptors |
| BodyDescriptorsQualifier | N8 Bytes | Qualifier of Body Descriptors |
| DescrMetadata | N8 Bytes | Descriptive Metadata |
5 Conformance Testing
A Data instance Conforms with Body Descriptors (PAF-BDD) if the Data instance validates against the Body Descriptors XML Schema.
