id	keyword
easat-2116	tree
easat-2116	vol
easat-2116	uav
easat-2116	area
easat-2116	height
easat-2116	flights
easat-2116	data
easat-2116	technology
easat-2116	photogrammetric
easat-2116	results
easat-2116	figure
easat-2116	learning