1 Definition | 2 Functional Requirements | 3 Syntax |
4 Semantics | 5 Conformance Testing | 6 Performance Assessment |
1 Definition
A Data Type including a collection of Basic Objects possibly of different Media Types.
An Object can have a hierarchical structure where Objects contain Basic Objects and Objects.
2 Functional Requirements
An Object may include:
- ID of a Virtual Space (M-Instance) where it is or intended to be located.
- ID of the Object.
- Space-Time information of the Object.
- Basic Object and Objects included in the Objects.
- Annotation data set including:
- Annotations
- Space-Times of the Annotations.
- Rights to perform Actions on the Object.
- The Rights that may be exercised on the Object.
Note that.
- An Object that does not include Objects but only one Basic Object is a Basic Object.
- The Space-Time information of a Basic Object, Object, or Basic Scene included in an Object may be superseded by the Space-Time information of the Object containing it.
The following table gives the Media Type-specific Objects.
Acronym | Object name | JSON |
OSD-B3O | Basic-3DModel Object | Link |
OSD-BAO | Basic Audio Object | Link |
OSD-BMO | Basic-Audio-Visual Object | Link |
OSD-BLO | Basic LiDAR Object | Link |
OSD-BOO | Basic Offline Map Object | Link |
OSD-BRO | Basic RADAR Object | Link |
OSD-BSO | Basic Speech Object | Link |
OSD-BTO | Basic Text Object | Link |
OSD-BUO | Basic Ultrasound Object | Link |
OSD-BVO | Basic Visual Object | Link |
3 Syntax
https://schemas.mpai.community/OSD/V1.4/data/Object.json
4 Semantics
Label | Description |
Header | Object Header |
– Standard-Object | The characters “OSD-OBJ-V” |
– Version | Major version – 1 or 2 characters |
– Dot-separator | The character “.” |
– Subversion | Minor version – 1 or 2 characters |
MInstanceID | Identifier of M-Instance. |
ObjectID | Identifier of the Object. |
ObjectSpaceTime | Space-Time of Object. |
BasicObjectCount | Set of Parent Objects. |
BasicObjects[] | Set of Basic Objects. |
– BasicObjectSpaceTime | Space Time of a Basic Object in the Object. |
– BasicObject | A Basic Object in the Object. |
ObjectCount | Set of Child Objects. |
Objects[] | Set of Objects. |
– ObjectSpaceTime | Space Time of an Object in the Object. |
– Object | An Object in the Object |
DataAnnotations[] | Set of Object Annotation. |
– Annotation | An Annotation. |
– AnnotationSpaceTime | Where Annotation is attached and when it will be active. |
– Rights | Actions that may be performed on the Annotation |
Rights | Actions that may be performed on the Object. |
DescrMetadata | Descriptive Metadata |
5 Conformance Testing
A Data instance Conforms with Object (OSD-OBJ) if:
- The Data validates against the Object’s JSON Schema.
- All Data in the Object’s JSON Schema
- Have the specified type
- Validate against their JSON Schemas
- Conform with their Data Qualifiers.