Monday, August 7, 2017

Android Studio Emulator: How I resolved a Google Maps SupportMapFragment GLThread exception

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While attempting to open up a Google Maps SupportMapFragment in the Android Studio Emulator , the Activity crashed with the following error...
Monday, July 31, 2017

PDAL: Colorize a LAS file with multiple GeoTiff images

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A LiDAR LAS file may not necessarily share the same bounds as a single raster image file. More often the case, to cover the LAS file more th...
Tuesday, July 25, 2017

Using Orfeo ToolBox to combine grayscale TIFF images into RGB and CIR composites

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For working with geo-referenced TIFF images, Orfeo ToolBox (OTB) provides a useful convenience function otbcli_concatenateImages to combine...
Monday, July 17, 2017

Use PDAL to generate a DEM from a LiDAR LAS file

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PDAL can be used to generate a GeoTIFF digital elevation model (DEM) from a LiDAR point cloud LAS file via the GDAL writer driver. The resul...
Wednesday, July 12, 2017

Applying a simple X,Y shift or translation to a raster GeoTIFF file using GDAL

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Sometimes when comparing a raster ortho-mosaic GeoTIFF file to ground control points (GCPs), the raster file may appear to be slightly shift...
Wednesday, June 28, 2017

Mask a LAS file using PDAL and QGIS

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The Point Data Abstraction Library (PDAL) comes with a useful function to mask or crop out a LiDAR LAS file with one or more polygons. The ...
Wednesday, June 21, 2017

Combine separate gray scale TIFF images into a single RGB TIFF image

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Some multi spectral cameras capture images as individual gray scale TIFF images - each file containing data for a single light wavelength e....