Pix4Dmapper can generate contour lines. For more information: 202558469.
Quantum GIS is an open source Geographic Information System (GIS) software: http://www.qgis.org/en/site/
In order to generate contour lines with Quantum GIS:
1. Open Quantum GIS.
2. Import the DSM: 202559719
3. From the menu click Raster.
4. Click Extraction.
5. Click Contour.
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