1     Definition 2     Functional Requirements 3     Syntax
4     Semantics 5    Conformance Testing 6     Performance Assessment

1      Definition

A Data Type including the Visual Objects of a scene, their time and arrangement in the scene, and the Rights that may be exercised on the scene.

In the following, “Object” and “Scene” are to be read as “Visual Object” and “Visual Scene”, respectively.

2      Functional Requirements

Basic Visual Scene Descriptors include

  1. Visual Objects
  2. Space-Time information.
  3. Rights that may be exercised on the Basic Visual Scene.

5     Syntax

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

4      Semantics

Label Description
Header Basic Visual Scene Descriptors Header
– Standard-BasicVisualSceneDescriptors The characters “OSD-BVS-V”
– Version Major version – 1 or 2 characters
– Dot-separator The character “.”
– Subversion Minor version – 1 or 2 characters
MInstanceID Identifier of M-Instance.
BasicVisualSceneDescriptorsID Identifier of Basic Visual Scene Descriptors.
VisualObjectCount Number of Visual Objects in Basic Visual Scene.
SceneDescriptorsSpaceTime Space and Time of Basic Visual Scene Descriptors.
BasicVisualSceneObjects[] Set of Visual Objects.
– BasicVisualSceneObject A Visual Object.
– BasicVisualSceneObjectSpaceTime Space Time of Visual Object.
Gravity Value of Gravity in Scene measured in m/s²
Rights Rights that may be exercised on the Basic Visual Scene.
DescrMetadata Descriptive Metadata

5     Conformance Testing

A Data instance Conforms with Basic Visual Scene Descriptors (OSD-BVS) if:

  1. The Data validates against the Basic Visual Scene Descriptors’ JSON Schema.
  2. All Data in the Basic Visual Scene Descriptors’ JSON Schema
    1. Have the specified type
    2. Validate against their JSON Schemas
    3. Conform with their Visual Data Qualifiers.

6     Performance Assessment