Close-range sensing techniques in alpine terrain - Rutzinger, Martin; Höfle, Bernhard; Lindenbergh, Roderik; Oude Elberink, Sander; Pirotti, Francesco; Sailer, R.; Scaioni, Marco; Stötter, Johann; Wujanz, Daniel (XXIII ISPRS Congress, Commission VI, 12-19 July 2016, Prague, Czech Republic, 2016)