How to create breaklines for LiDAR Data? Error in height(DSM-DEM) with water bodies

SamriddhiShakya · ‎11-12-2013

Hi everyone ,

I have liDAR data (LAS files) of a county and I want to calculate height of the features from it . I created multi-points for both bare earth and non-ground and also terrain dataset from it.However , I do not have the breaklinesfor my LiDAr data .From the terrain dataset ,I created DEM and DSM Raster and also got the height raster(DSM-DEM) of the features from it. However , I am having some errors with the height of some water bodies .Normally,water bodies does not have much height but I am having some water features having more that 10 to 20 meters of height .

When I checked for the error,I found that while making Terrain dataset ,the height of water features have been overestimated. Since I don't have breaklines for my data to seperate water features, I am not able to eliminate this error . Is there anyway that I can solve this problem or create the break-lines for my liDAR data.

Waiting for your kind response.

Thanks ,
Sam

XanderBakker · ‎11-21-2013

Hi Sam,

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Kind regards,

Xander