Vehicle position determination device, vehicle position determination system, and vehicle position determination method

A vehicle position determination system mountable to a vehicle, the vehicle position determination system comprising:

• an acquisition unit that acquires a surrounding image that is road information for identifying a position of the vehicle and is represented by a small displacement with respect to the vehicle;
• a control unit that compares the road information with road characteristic information indicating an absolute position of a predetermined point and determines a vehicle position according to a result of the comparison;
• and
• a displacement sensor that outputs the surrounding image, wherein
• the displacement sensor is configured to acquire the small displacement as a luminance change signal.

A vehicle position determination method comprising:

• acquiring a surrounding image that is road information for identifying a position of a vehicle and is represented by a small displacement with respect to the vehicle;
• and
• comparing the road information with road characteristic information indicating an absolute position of a predetermined point and determining a vehicle position according to a result of the comparison;
• wherein
• the road information includes at least one of road shape information indicating a shape of a road surface in a direction of travel of the vehicle and road pattern information indicating a pattern on a road surface.