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

1      Definition

An Item including a series of Visual Scene Descriptors for a certain duration.

2      Functional Requirements

Visual Event Descriptors contains Visual Scene Descriptors for a Time.

3      Syntax

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

4      Semantics

Label Description
Header Visual Event Descriptors Header
– Standard-VisualEventDescriptors The characters “OSD-VIEE-V”
– Version Major version – 1 or 2 characters
– Dot-separator The character “.”
– Subversion Minor version – 1 or 2 characters
MInstanceID Identifier of M-Instance.
EventID Identifier of the Event.
EventSpaceTime Data about start and end Space-Time.
SceneDescriptors[] Set of Scene Descriptors
– SceneDescriptors Set of AV Scene Descriptors of IDs.
DescrMetadata Descriptive Metadata

5     Conformance Testing

A Data instance Conforms with MPAI-OSD Visual Event Descriptors  (OSD-VIE) if:

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

6     Performance Assessment