okansas.blogspot.com Occassional thoughts about orienteering
Sunday, October 24, 2010
Today's fieldchecking with a lidar image
Below is a laser scan (lidar) image of a section of forest that I was fieldchecking today. I created the image with OL-laser.
I highlighted a few features:
1. These blobs in the forest are individual cedar trees. They are quite useful to have on the base map.
2. The east-west running linear feature is an old rock wall. Most of the wall is no more than 0.5 meter high. It will be drawn as a ruined rock wall on the final map.
3. The diagonal line looks a bit like the rock wall. But it isn't a rock wall. It turns out it is a fallen tree.
4. The north-south running linear feature (which is a bit hard to see) is another old rock wall, mostly ruined.
The stream bed that runs east-west across the middle of the map stands out clearly.
The image below is a Google earth photo. You can see the east-west running rock wall pretty clearly. Some of the cedar trees are visible, but not as easy to spot as on the laser scan image.
I really like to read your blogg especially when you make so god advertise for OL Laser ;-) I am impressed about all the images you can show us. It will give me more energi to take up the development for a version 2.
