IMAGE PROCESSOR AND IMAGE PROCESSING METHOD

An image processor includes a line extraction portion configured to extract a line from an image generated from a vehicle surrounding image captured at a predetermined timing, a tracking determination portion configured to determine whether the extracted line fulfills a predetermined condition or not, a comparing portion configured to compare the line that is determined as fulfilling the predetermined condition with a line that is extracted by the line extraction portion from an image generated from a vehicle surrounding image captured at a predetermined timing in past to obtain degrees of similarity and coincidence thereof, a parking area line determination portion configured to determine the line as a parking area line when the obtained degrees of similarity and coincidence are equal to or more than a given value, and a parking frame setting portion configured to set a parking frame by using the line determined as the parking area line.