1   Definition

The digital representation of the traffic signalisations used at a U-Location. For the sake of simplicity, it is assumed that Traffic Signal Descriptors are derived using Audio and Visual Scene Descriptors. The content of this Subsection can be easily extended to apply to Scene Descriptors of other Environment Sensing Technology Data.

2   Functional Requirements

Traffic Signal Descriptors include:

  1. Position and Orientation of the traffic audio and visual signals at the U-Location:
    • Road signs
    • Traffic signs
    • Traffic lights
    • Walkways
    • Lanes
    • Traffic sound
  2. Semantics of the traffic signals.

Traffic Signal Descriptors can be used as Attributes of the MPAI-specified Scene Descriptors.

3   Syntax

https://schemas.mpai.community/OSD/V1.1/data/AudioVisualSceneDescriptors.json

4   Semantics

Label Size Description
Header N1 Bytes
·         Standard 9 Bytes The characters “MMM-TSD-V”
·         Version N2 Bytes Major version – 1 or 2 Bytes
·         Dot-separator 1 Byte The character “.”
·         Subversion N3 Bytes Minor version – 1 or 2 Bytes
TrafficSignalConfigurationID N4 Bytes Identifier of TSD.
TrafficSignalConfigurationData N5 Bytes
·         AVScene Descriptors N6 Bytes AV Scene Descriptors with added Object semantics (Traffic Signal Descriptors)
DescrMetadata N7 Bytes Descriptive Metadata

5   Data Types and Formats

Traffic Signal Descriptors are Attributes of the Audio-Visual Scene’s Objects.

6   To Respondents

Respondents are requested to:

  1. Comment on, extend, or reformulate the Functional Requirements.
  2. Comment on the use MPAI Object and Space Descriptors for Traffic Signal Descriptors needs.
  3. Propose alternative Traffic Signal Descriptors solutions.