circlesun

Enhancement of circular features in raster images.

The program places a light source that radiates outwards in all directions on a user-specified point in a raster dataset to highlight circular features of any radii centred there. It also highlights linear features of any orientation that pass through the chosen point.

See ;

Cooper, G.R.J., 2003. Feature Detection using Sunshading.
Computers and Geosciences v.29 no.8 p.941-948.

for more details, or e-mail me for the paper in pdf format.