void
	unlabeled	255	2
flat
	road	0	0
	sidewalk	1	0
construction
	building	2	0
	wall	3	0
	fence	4	0
object
	pole	5	0
	traffic light	6	0
	traffic sign	7	0
nature
	vegetation	8	0
	terrain	9	0
sky
	sky	10	0
human
	person	11	0
	rider	12	0
vehicle
	car	13	0
	truck	14	0
	bus	15	0
	train	16	0
	motorcycle	17	0
	bicycle	18	0
