okansas.blogspot.com Occassional thoughts about orienteering
Saturday, May 10, 2008
A Swedish comparison of lidar and O' maps
A comparison of a lidar basemap and an orienteering map from Sweden:
The image is from Erik Zander's paper on lidar as a method for producing orienteering maps. The paper is in Swedish, but has some nice graphics that compare the data he got from lidar to an orienteering map of the same area. Here is the PDF file.
Reading Zander's paper inspired me to play around with some local lidar data. I've been using a free program called Quickgrid to produce contour maps which can be exported and used in OCAD. I also installed a demo version of Global Mapper which seems to have a few more features than Quickgrid (and let me open some lidar data that I can't open in Quickgrid).
With Global Mapper I was able to easily view some of the shaded relief lidar data. These files showed a reasonable amount of detail - like ditches and roads - that aren't necessarily visible in the contours alone.
I'll keep experimenting...but, now I've got to go do some organizing around the house (and packing).
