Makes use of the brilliant scikit-image library to detect the centers of basic square-like shapes in imagery and output these as points in a shapefile.
An application is shown below using a Landsat-8 panchromatic band as a test image. Although the resolution of the imagery does limit detection accuracy, a good number of squares were detected correctly providing a basic human population map. Landsat-8 imagery is freely available from USGS Earthexplorer.
Test image:
Test image + detected squares (green points):
Test image + heatmap of detected squares:
- GDAL
- Numpy
- Scipy
- Shapely
- Fiona
- Skimage