BigTIFF file conversion for CAD package import

When generating a GeoTIFF Ortho using Metashape through TrueView Evo, the initial file is written in BigTIFF format which is incompatible with some CAD software packages, including Civil3D. There are also size considerations to be factored in as orthos that are generated in TIFF format are subject to the 32-bit size limit of 4GB. This article reviews how to generate raster files that will be compatible with different third party CAD software packages.

Converting BigTIFF files into TIFF format

To convert BigTIFF files into TIFF format, use the Reproject Raster Point Cloud Task (PCT) to generate a new file that is in TIFF format. Rasters created by LP360 processes can be created in this format. Make sure that the “Create BigTIFF File option” is unchecked when running this PCT.

Reproject Raster PCT Settings.

Size considerations

If the original BigTIFF file is larger than 4GB in size or the user has a specific size limit smaller than the original raster file, the user can generate a grid (using the Grid Generator PCT) to be used to tile the original ortho to smaller size individual files by adjusting the Cell Size value setting. This generated shapefile grid can be specified in the “Feature Geometry” setting of the Reproject Raster PCT.

Grid Generator PCT Settings.

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