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

1      Definition

An Item represented by a series of Basic Scene Descriptors for a certain duration (from a start Time to an end Time).

2      Functional Requirements

Basic Event Descriptors contains Basic Scene Descriptors between two Times.

3      Syntax

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

4      Semantics

Label Size Description
Header N1 Bytes BasicEvent Descriptors Header
– Standard – BasicEventDescriptors 9 Bytes The characters “OSD-BED-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
MInstanceID N4 Bytes Identifier of M-Instance.
BasicEventDescriptorsID N5 Bytes Identifier of Basic Event Descriptors.
BasicEventDescriptorsSpaceTime N6 Bytes Data about start and end Space-Time.
BasicEventDescriptors[] N7 Bytes Collection of Basic Scene Descriptors between Start Time and End Time
– BasicSceneDescriptors N8 Bytes Set of  Basic Scene Descriptors of IDs.
DescrMetadata N9 Bytes Descriptive Metadata

5     Conformance Testing

A Data instance Conforms with Basic Event Descriptors (OSD-BED) if:

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

6     Performance Assessment