Parked vehicle detection device, vehicle management system, and control method

A vehicle management system comprising:

• a parked vehicle detection device that comprises:
• a vehicle detector that detects another vehicle included in an image of at least a front of a host vehicle, the image captured by an imaging device mounted on the host vehicle;
• a host vehicle position detector that detects a position of the host vehicle;
• a position calculator that calculates a position of the detected another vehicle based on the detected position of the host vehicle;
• a vehicle information storage that stores therein information on the another vehicle, the information including the calculated position;
• and a parked vehicle determiner that determines whether the another vehicle is high possible parked vehicle based on the information on the another vehicle;
• and
• a management server device connected with the parked vehicle detection device via a communication network, wherein
• the management server device receives items of parked vehicle information from parked vehicle detection devices, determines, based on the received parked vehicle information, other vehicles detected at a same position by the parked vehicle detection devices as a same vehicle parked at the position in a certain period of time, and processes information on the other vehicles as a parked vehicle.

A control method to be executed by a parked vehicle detection device mounted on a host vehicle including an imaging device, the control method comprising:

• detecting another vehicle included in an image of at least a front of the host vehicle, the image captured by the imaging device mounted on the host vehicle;
• detecting a position of the host vehicle;
• calculating a position of the detected another vehicle based on the detected position of the host vehicle;
• storing information on the another vehicle, the information including the calculated position;
• and
• determining whether the another vehicle is high possible parked vehicle based on the information on the another vehicle.