1. A vehicle-type determination apparatus that determines a type of a vehicle based on an image of the vehicle captured, the vehicle-type determination apparatus comprising: a memory; and a processor coupled to the memory, wherein the processor executes a process comprising: extracting a vehicle portion from the image; recognizing an area corresponding to a hood in the vehicle portion extracted at the extracting; and determining the type of the vehicle based on an inclination of a side of the area recognized at the recognizing.