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Last active February 24, 2021 07:51
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Georeferencing 101 - Images to Spatial Data.

Outline

  1. What is Georeferencing? And Why?
  2. Ground Control Points.
  3. Tools. 1. GIMP 2. Inkscape 3. QGIS
  4. Raster data.
  5. Process
  6. PDF to Image.
  7. Image preprocessing.
  8. Acquire base vector layer.
  9. Set GCP.
  10. Export raster.
  11. Polygonise.
  12. Vectorise.

Prerequisites

  1. Computers with GIMP, Inkscape and QGIS 2.0 or higher.
  2. GDAL/OGR packages.
  3. OS X - Install GDAL/OGR along with QGIS
  4. Ubuntu - Download from the package manager.
  5. Windows
  6. Bring the best pointing device you have (mouse, trackpad, trackball, drawing tablets etc.)
  7. Bring lots of patience and coffee.
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