nadar Posted May 11, 2015 Report Share Posted May 11, 2015 Does somebody have a good reference on - practical results of DEM generation using various types of satellite imagery - the relation (if any) between spatial resolution) and the accuracy (in elevation) for derived DTM/DSM - the same question about airborne LiDAR data (relation between points density and accuracy). (I'm preparing a project where DEM accuracy is critical (flooding) and we are hesitating between satellite and airborne LiDAR All advices and experience are welcome ! 1 Quote Link to comment Share on other sites More sharing options...
hiram Posted May 11, 2015 Report Share Posted May 11, 2015 I think that this paper can help you https://eprints.usq.edu.au/3780/2/Liu_Zhang_Peterson_Chandra_Geoinformatica_2007_Author%27s_version.pdf http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.202.5348&rep=rep1&type=pdf http://gis.stackexchange.com/questions/112813/ditch-extraction-using-lidar-dtm-1m-resolution Quote Link to comment Share on other sites More sharing options...
juliusmall Posted May 13, 2015 Report Share Posted May 13, 2015 Probably is expensive: http://www.photosat.ca/mapping-services/30cm-accuracy-topography-mining.php?&utm_source=infomine-mining-com&utm_medium=web-ad&utm_campaign=mining-com-world-map Quote Link to comment Share on other sites More sharing options...
nadar Posted May 18, 2015 Author Report Share Posted May 18, 2015 Thanks a lot. I have some readings for a while. I will come back later Quote Link to comment Share on other sites More sharing options...
Capricorn Posted May 21, 2015 Report Share Posted May 21, 2015 Any ideas of spatial resolution of DEMs created from vectorized topo maps? 1:25.000 (contours distance 10 m, and some on 5m when terrain is flat) 1:10.000 1:5.000 1:2.500 1:1.000 1:500 Quote Link to comment Share on other sites More sharing options...
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