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Content Representation

1        Introduction

This section identifies the functionalities that the digital representation of content in the Metaverse may support.

Scene Representation  54
Object Representation  55
Content Metadata  56

2        Scene Representation

This subsection identifies and defines Functionalities of a Scene Description.

Area 3. Content Representation
Subarea 3.1 Scene Description
Title 3.1.1 Scene Description Format
Description The Scene Description Format represents both Virtual and Digitised Scenes.
Comment A Scene with two Digitised Humans uses the same Scene Description as a Scene with two Digital Humans.
 
Area 3. Content Representation
Subarea 3.1 Scene Description
Title 3.1.2 Addition of Objects
Description The Scene Description that includes Virtual Objects integrates Digitised Objects into the Scene and vice-versa.
Comment If there is object occlusion, the Digitised Scene Description may not allow access to the full Digitised Objects.
 
Area 3. Content Representation
Subarea 3.1 Scene Description
Title 3.1.3 Object types in Scene
Description The Scene Description Format integrates both static and dynamic Objects.
Comment The Scene Description Format has the capability to represent Objects with their Spatial Attitude.
 
Area 3. Content Representation
Subarea 3.1 Scene Description
Title 3.1.4 Audio and Visual Objects in Scene
Description The Scene Description format handles Audio and Visual Objects.
Comment The Scene Description format handles a Virtual Human with an attached Speech from a human.
 
Area 3. Content Representation
Subarea 3.1 Scene Description
Title 3.1.5 Five-sense Objects in Scene
Description The Scene Description Format represent a Scene that includes Objects able to stimulate the five human senses (Touch. Smell, and Taste in addition to Sight and Sound) and other data sources in a Universe Environment.
Comment The Scene Description represents the expanding smell of perfume in a room.
 
Area 3. Content Representation
Subarea 3.1 Scene Description
Title 3.1.6 Network constraints
Description The Scene Description Format copes with the constraints of a network connection.
Comment A human sees images gradually improving definition when the network connection with a Universe Environment has a bitrate insufficient to cope with the bitrate required to transmit the scene.
 
Area 3. Content Representation
Subarea 3.1 Scene Description
Title 3.1.7 Object creation
Description A User creates and places a 3D Object in a Scene.
Comments The User relies on a content creation tool provided by the Metaverse Environment.

3        Object Representation

This subsection identifies and defines Functionalities of an Object Representation.

Area 3. Content Representation
Subarea 3.2 Object Description
Title 3.2.1 Object Identifier
Description An Object has an associated Identifier.
Comment A Digital Object representing a landmark object in a Universe Environment has an Identifier.

The Digitised Objects in the Full Environment Representation generated by a CAV are assumed to have CAV-generated Identifiers.

 
Area 3. Content Representation
Subarea 3.2 Object Description
Title 3.2.2 Decentralised Identifier
Description An Object has a unique Identifier independently of the existence of a central authority.
Comment Digital ledgers can offer this functionality (Decentralised Identifier).
 
Area 3. Content Representation
Subarea 3.2 Object Description
Title 3.2.3 Object details
Description An Object is represented with an arbitrarily large level of fine details.
Comment Support of an arbitrary level of detail for any Objects representing objects may be long to come. However, some Metaverse Environments that are Digital Twins of, e.g., biological laboratory Environments, could come much sooner.
 
Area 3. Content Representation
Subarea 3.2. Object Representation
Title 3.2.4 Selection of part of Metaverse Environment
Description A User selects a part of a Metaverse Environment (audio and video).
Comments The Metaverse Environment provides an interface to select a part of a Metaverse Environment.
 
Area 3. Content Representation
Subarea 3.2. Object Representation
Title 3.2.5 3D copy of a selected part of Metaverse Environment
Description A User 3D copies a part of a Metaverse Environment (audio and video).
Comments Making a 3D copy of a Metaverse Environment may be subject to conditions.
 
Area 3. Content Representation
Subarea 3.2. Object Representation
Title 3.2.6 Acting on an Object
Description A User uses an Object to act on another Object.
Comments A User holding an Object (blade) dissects another Object. The dissected Object displays the same features as the corresponding real object.

4        Content Metadata

This subsection identifies and defines the Functionalities of Content Metadata.

Area 3. Content Representation
Subarea 3.3 Content Metadata
Title 3.3.1 Scene and Object Metadata
Description The Metadata of a Scene or an Object carries ownership information.
Comment Ownership information can cover:

1.      Legal ownership.

2.      Creator information.

3.      Authoring tool provider information.

4.      Provenance.

5.      Transferability of ownership.

6.      …

 
Area 3. Content Representation
Subarea 3.3 Scene and Object Metadata
Title 3.3.2 Metadata editing
Description A User is not allowed to edit or delete ownership information.
Comment An Object’s provenance information is permanent.
 
Area 3. Content Representation
Subarea 3.3 Scene and Object Metadata
Title 3.3.3 Metadata access
Description A User Edits the Metadata of an Entity.
Comment A User changes information describing an Entity based on Rights.

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