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 Text Objects.

A Text Object can have a hierarchical structure where Text Objects contain Basic Text Objects and Text Objects.

2      Functional Requirements

A Text Object may include:

  1. ID of a Virtual Space (M-Instance) where it is or intended to be located.
  2. ID of the Text Object.
  3. Space-Time information of the Text Object.
  4. Basic Text Object and Text Objects included in the Text Objects.
  5. Annotation data set including:
    1. Annotations
    2. Space-Times of the Annotations.
    3. Rights to perform Actions on the Text Object.
  6. The Rights that may be exercised on the Text Object.

Note that.

  1. A Text Object that does not include Sub-Scenes and only one Basic Text Object is a Basic Text Object.
  2. The Space-Time information of a Basic Text Object and Text Object included in a Text Object may be superseded by the Space-Time information of the Text Object containing them.

3      Syntax

https://schemas.mpai.community/OSD/V1.4/data/TextObject.json

4      Semantics

Label Description
Header Text Object Header
– Standard-TextObject The characters “OSD-TXO-V”
– Version Major version – 1 or 2 characters
– Dot-separator The character “.”
– Subversion Minor version – 1 or 2 characters
MInstanceID Identifier of M-Instance.
TextObjectID Identifier of the Text Object.
TextObjectSpaceTime Space-Time of Text Object.
BasicTextObjectCount Set of Parent Text Objects.
BasicTextObjects[] Set of Basic Text Objects.
– SpaceTime Space Time of a Basic Text Object in the Text Object.
– BasicTextObject A Basic Text Object in the Text Object.
TextObjectCount Number of Text Objects.
TextObjects[] Set of Text Objects.
– SpaceTime Space Time of a Text Object in the Text Object.
– TextObject A Text Object in the Text Object
Annotations[] Set of Text 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 Text Object (OSD-TXO) if:

  1. The Data validates against the Text Object’s JSON Schema.
  2. All Data in the Text Object’s JSON Schema
    1. Have the specified type
    2. Validate against their JSON Schemas
    3. Conform with their Data Qualifiers.

6     Performance Assessment