Hakan Almqvist Martin Magnusson 0002 Todor Stoyanov Achim J. Lilienthal Improving point-cloud accuracy from a moving platform in field operations. 733-738 2013 ICRA https://doi.org/10.1109/ICRA.2013.6630654 conf/icra/2013 db/conf/icra/icra2013.html#Almqvist0SL13