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.

Back to okansas.blogspot.com.

posted by Michael | 4:11 PM


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.

I'm a big fan of OL Laser. I've been able to get a lot more info out of the data than in the past and it has been easy to use.

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