Map information assessment device, storage medium storing computer program for map information assessment, and map information assessment method

A non-transitory computer readable medium having instructions stored therein, which when executed by a processor in a map information assessment device cause the processor to execute a method comprising:

• retrieving, from a storage memory, a first map used for estimating a location of a vehicle and a second map used for traveling of the vehicle, wherein the first map displays a first road divided into a plurality of first zones, wherein the second map displays a second road divided into a plurality of second zones, wherein the second map is different from the first map,
• matching each first zone from the plurality of first zones with a corresponding second zone from the plurality of second zones, the matching being made by using a location on the second road that is closest to a starting point of one first zone as the starting point, and using as the corresponding second zone, a zone in the second map having a same length as the one first zone in a direction from the starting point toward an end point of the one first zone;
• calculating, after the matching is performed, a zone adjacent distance between an end point of one second zone and a starting point of another second zone adjacent to the one second zone;
• and
• based on a determination that the zone adjacent distance is greater than a predetermined threshold, determining that positional information for the first road in the first zone is different from positional information for the second road in the second zone corresponding to the first zone,
• wherein a vehicle control device in communication with the map information assessment device controls a movement of the vehicle based on the positional information for the first road and the positional information for the second road.

A map information assessment method performed by a map information assessment device, the method comprising:

• retrieving, from a storage memory, a first map used for estimating a location of a vehicle and a second map used for traveling of the vehicle, wherein the first map displays a first road divided into a plurality of first zones, wherein the second map displays a second road divided into a plurality of second zones, wherein the second map is different from the first map,
• matching each first zone from the plurality of first zones with a corresponding second zone from the plurality of second zones, the matching being made by using a location on the second road that is closest to a starting point of one first zone as the starting point, and using as the corresponding second zone, a zone in the second map having a same length as the one first zone in a direction from the starting point toward an end point of the one first zone;
• calculating, after the matching is performed, a zone adjacent distance between an end point of one second zone and a starting point of another second zone adjacent to the one second zone;
• and
• based on a determination that the zone adjacent distance is greater than a predetermined threshold, determining that positional information for the first road in the first zone is different from positional information for the second road in the second zone corresponding to the first zone,
• wherein a vehicle control device in communication with the map information assessment device controls a movement of the vehicle based on the positional information for the first road and the positional information for the second road.