211996document75462isprsannals-II-3-W5-317-2015.pdfapplication/pdfaf91de0df110daed2496676af6b55d97MD58301382017-03-23 09:51:24https://pure.iiasa.ac.at/id/eprint/14253/1/isprsannals-II-3-W5-317-2015.pdf