Monday, May 21, 2018

Perform a 2D geo-registration of a LiDAR LAS file to a GeoTiff image with Cloud Compare

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Recently I received LiDAR LAS point clouds generated without using accurate GPS positioning. As a result, the data is not placed at the corr...
2 comments:
Monday, May 14, 2018

Use PDAL to apply a vertical datum geoid correction to a LAS file

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PDAL can be used to apply a vertical datum correction to LAS files, e.g. to convert LiDAR data in ellipsoidal heights to mean sea level usin...
Monday, May 7, 2018

Using PDAL to perform simple translation transformations on LAS files

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Sometimes for whatever reason you may want to apply a simple linear translation ( dx, dy, dz ) transformation shift on a LiDAR las file. PDA...
Monday, April 30, 2018

Better point cloud visualization in Cloud Compare with Eye Dome Lighting shading

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Typically, LiDAR point clouds are displayed as a mass of colored points without perception of depth in a viewer. This can be hard to visuali...
Monday, March 26, 2018

Resolving Maven "trustAnchors parameter must be non-empty" error

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I encountered this Maven error on a new Ubuntu 18.04 system while trying to perform a mvn build on a Google AppEngine project. A screens...
4 comments:
Wednesday, March 7, 2018

Fixing "Cannot resolve symbol Theme" error in Android Studio

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If you have ever encountered unusual " cannot resolve symbol " messages with regards to Android resource XML files (an example is ...
Monday, February 26, 2018

Use PDAL to register a point cloud to control points

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Sometimes, some 3D LiDAR point cloud data are not at the correct location or they are not aligned with other point clouds. When this happens...