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.





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posted by Michael | 4:11 PM

2 comments


Comments:
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.

/jerker
 
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.

Michael
 
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