DEVICE, METHOD, AND COMPUTER PROGRAM FOR LANE DETERMINATION

A device for lane determination includes a processor configured to detect a vehicle region representing a target vehicle traveling in an area around a host vehicle from an image of the area around the host vehicle generated by a camera mounted on the host vehicle, and determine that the target vehicle is traveling on an adjacent lane next to a lane on which the host vehicle is traveling, in the case where the vehicle region touches a left or right edge of the image and where a bottom position of the vehicle region is within a predetermined vertical range of the image.