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New Contributor
Posts: 3
Registered: ‎03-19-2019
Accepted Solution

Combining two DEMs in terrain editor

I have a problem with combining two DEMs.

 

I have one TIFF DEM where river bed is not accurate and I have point cloud file of river bed with accurate data.

 

So, I need to upade TIFF DEM with this point cloud file.

 

Is this possible to do in Erdas Imagine?

 

Thank you in advance,

Goran

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Technical Evangelist
Posts: 883
Registered: ‎10-01-2015

Re: Combining two DEMs in terrain editor

Hi Goran,

 

Terrain Prep Tool provides an option to merge DTM datasets.

 

What I would probably suggest is first setting to NoData the area in the (inaccurate) raster DEM corresponding to the extent of the accurate point cloud data.  Then feed that edited raster and the point cloud into Terrain Prep Tool.

 

Cheers

 

Ian Anderson
Chief Product Owner, Desktop Remote Sensing
Hexagon Geospatial