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

1      Definition

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

2      Functional Requirements

Event Descriptors contains Scene Descriptors between two Times.

3      Syntax

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

4      Semantics

Label Description
Header Event Descriptors Header
– Standard – EventDescriptors The characters “OSD-EVD-V”
– Version Major version – 1 or 2 characters
– Dot-separator The character “.”
– Subversion Minor version – 1 or 2 characters
MInstanceID Identifier of M-Instance.
EventDescriptorsID Identifier of Event Descriptors.
EventDescriptorsSpaceTime Data about start and end Space-Time.
EventDescriptors[] Collection of Scene Descriptors between Start Time and End Time
– SceneDescriptors Set of  Scene Descriptors of IDs.
DescrMetadata Descriptive Metadata

5     Conformance Testing

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

  1. The Data validates against the Event Descriptors’ JSON Schema.
  2. All Data in the  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