okansas.blogspot.com Occassional thoughts about orienteering
Wednesday, August 06, 2008
Lidar - revolution for orienteering mapping
I came across some discussion of lidar and orienteering maps on the forum at OPN.NO. Among other things, I learned that they're using lidar as basemap material for at least some of the 2010 World Champs maps. I also learned that in Norway they use the term laser-scanning rather than lidar.
Havard Tviete - famous Norwegian orienteer and O' map geek - wrote (roughly translated):
For the base to be used for the World Champs in Trondheim we reached the conclusion that 1.25 meter contour interval was good. You want to have as much information as possible but it is also important that the basemap is readable. After checking the basemap in Trondheim, I'm convinced that basemaps from lidar are a revolution for orinteering mapping.
The discussion over at OPN.NO includes a link to materials from a O' mapping conference last year. Here's a link to the mapping conference materials. I don't have the time (or energy) to translate, but if you're interested in lidar for O' maps, poke around and you'll find some interesting materials.
The image below is from the mapping conference and shows a comparison of the existing orienteering map (5 meter contours) and a lidar basemap (1.25 meter contours). The purple circles show cliffs based on the basemap.
