Method and apparatus for generating an accident information graph
A coordination node ( 1000 ) is disclosed for coordinating generation of an accident information graph comprising information representative of a vehicle accident environment. The coordination node comprises processing circuitry ( 1010 ) configured to detect an event associated with occurrence of a vehicle accident ( 110 ) and obtain environment data representative of the vehicle accident environment in which the event was detected ( 120 ). The processing circuitry is further configured to generate an accident information graph based on the obtained environment data, wherein the accident information graph comprises a structured representation of the obtained environment data and at least one semantic annotation to the obtained environment data ( 130 ).
1 . An apparatus comprising:
one or more communication interfaces; and
processing circuitry operatively associated with the one or more communication interfaces and configured to:
exchange signaling with one or more other apparatuses that are within a geographical vicinity of a detected event that is associated with occurrence of a vehicle accident, including:
carrying out an election process whereby the apparatus is elected as a coordinating node and the one or more other apparatuses serve as data gathering nodes with respect to a vehicle accident environment in which the event was detected; and
acting as the coordinating node, based on receiving environment data from the data gathering nodes, the environment data representative of the vehicle accident environment and including sensor data obtained from sensors in the data gathering nodes
generate an accident information graph as a structured representation of the received environment data, including processing the received environment data and adding semantic annotations based on results of the processing; and
transmit the accident information graph to an emergency authority.
2 . A method performed by an apparatus, the method comprising:
exchanging signaling with one or more other apparatuses that are within a geographical vicinity of a detected event that is associated with occurrence of a vehicle accident, including:
carrying out a leader election process whereby the apparatus is elected as a coordinating node and the one or more other apparatuses serve as data gathering nodes with respect to a vehicle accident environment in which the event was detected; and
acting as the coordinating node, based on receiving environment data from the data gathering nodes, the environment data representative of the vehicle accident environment and including sensor data from sensors in the data gathering nodes;
generating an accident information graph as a structured representation the received environment data, including processing the received environment data and adding semantic annotations based on results of the processing; and
transmitting the accident information graph to an emergency authority.
3 . The method according to claim 2 , further comprising:
starting a timer upon in association with the event detection; and
transmitting the accident information graph upon expiry of the timer.
4 . The method according to claim 3 , further comprising setting a duration of the timer according to an estimated severity of the vehicle accident.
5 . The method according to claim 4 , wherein acting as the coordinating node based on receiving the environment data comprises using the duration of the timer as a window for gathering environment data from the data gathering nodes, and wherein generating the accident information graph comprises basing the accident information graph on all environment data gathered during the window.
6 . The method according to claim 2 , wherein the environment data includes video data from one or more of the data gathering nodes, and wherein generating the accident information graph includes performing object recognition on the video data via a convolutional neural network trained for identifying objects or entities, and wherein adding the semantic annotations includes adding object labels for objects recognized in the video data.
7 . The method according to claim 2 , wherein carrying out the leader election process comprises the apparatus exchanging information with the one or more other apparatuses, each respective apparatus involved in the exchange indicating one or more factors bearing on suitability of the respective apparatus for leader election, the one or more factors including at least one of: available computational capacity of the respective apparatus, and whether the respective apparatus is moving.
8 . The method according to claim 7 , further comprising the apparatus initiating the leader election process based on detecting the event.
9 . The method according to claim 4 , wherein the one or more other apparatuses comprise any ones or any mix of:
a Radio Access node of a communication network;
a communication node associated with a vehicle; and
a communication node associated with an item of roadside infrastructure.
10 . The method according to claim 2 , further comprising transmitting requests for the environment data and receiving the environment data responsive to the requests.
11 . The method according to claim 2 , further comprising:
anonymising the environment data; and
generating the accident information graph based on the anonymised environment data.
12 . The method according to claim 2 , wherein the apparatus acting as the coordination node comprises one of:
a Radio Access node of a communication network;
a communication node associated with a vehicle;
a communication node associated with an item of roadside infrastructure.