Apparatus and method for collecting map-generating data
An apparatus for collecting map-generating data includes a processor configured to count, for each of road sections, the number of pieces of map-generating data received in a first period from one of at least one vehicle, identify one of the road sections for which the number of pieces of map-generating data received in the first period does not reach a target number for the one of the road sections, and predict, for the identified road section, the number of pieces of map-generating data to be received in a second period ahead after the first period, based on history of traffic volume under each environmental condition or history of the number of pieces of map-generating data previously received for the road section.
1. An apparatus for collecting map-generating data, comprising:
a communication circuit capable of communicating with at least one vehicle;
a memory; and
a processor configured to: store, when receiving from any of the at least one vehicle via the communication circuit, map-generating data representing road environment around the vehicle together with information indicating a road section where the map-generating data is acquired, in the memory the map-generating data in association with the road section and a date and time of reception,
count, for each of road sections, the number of pieces of map-generating data received in a first period,
identify one of the road sections for which the number of pieces of map-generating data received in the first period does not reach a target number for the one of the road sections,
predict, for the identified road section, the number of pieces of map-generating data to be received in a second period ahead after the first period, based on history of traffic volume under each environmental condition or history of the number of pieces of map-generating data previously received for the road section;
instruct via the communication circuit a predetermined device to collect the map-generating data of the identified road section when the sum of the number of pieces of map-generating data received in the first period and the number of pieces of map-generating data predicted to be received in the second period for the road section does not reach the target number for the road section; and
not instruct the predetermined device to collect the map-generating data of the identified road section when the number of pieces of map-generating data received in the first period for the road section or the sum of the number of pieces of map-generating data received in the first period and the number of pieces of map-generating data predicted to be received in the second period for the road section reaches the target number for the road section.
2. The apparatus according to claim 1 , wherein the processor determines a predicted value of traffic volume under each environmental condition for the identified road section, based on the history of traffic volume under each environmental condition, and predicts the number of pieces of map-generating data to be received in the second period, using a prediction model representing a relationship between the predicted value of traffic volume under each environmental condition and the number of pieces of map-generating data to be received.
3. The apparatus according to claim 1 , wherein the processor determines a predicted value of traffic volume in the second period for the identified road section, based on the history of traffic volume under each environmental condition, and predicts the number of pieces of map-generating data to be received in the second period, using a prediction model representing a relationship between the predicted value of traffic volume and the number of pieces of map-generating data to be received.
4. A method for collecting map-generating data, comprising:
storing, when receiving from any of at least one vehicle via a communication circuit capable of communicating with the at least one vehicle, map-generating data representing road environment around the vehicle together with information indicating a road section where the map-generating data is acquired, in a memory the map-generating data in association with the road section and a date and time of reception;
counting, for each of road sections, the number of pieces of map-generating data received in a first period;
identifying one of the road sections for which the number of pieces of map-generating data received in the first period does not reach a target number for the one of the road sections;
predicting, for the identified road section, the number of pieces of map-generating data to be received in a second period ahead after the first period, based on history of traffic volume under each environmental condition or history of the number of pieces of map-generating data previously received for the road section;
instructing via the communication circuit a predetermined device to collect the map-generating data of the identified road section when the sum of the number of pieces of map-generating data received in the first period and the number of pieces of map-generating data predicted to be received in the second period for the road section does not reach the target number for the road section; and
not instructing the predetermined device to collect the map-generating data of the identified road section when the number of pieces of map-generating data received in the first period for the road section or the sum of the number of pieces of map-generating data received in the first period and the number of pieces of map-generating data predicted to be received in the second period for the road section reaches the target number for the road section.