There are lots of papers and materials on Barceló's web pages.
Shape analysis. Shape is any connected set of points:
There are different methods for describing shape: circularity, quadrature, irregularity, elongation, size measurements. Like morphometric measurements in anthropology, we can also use curvature changes' points.
Surfaces are characterized by texture.
It is important to find a balance between globalisation and localisation when describing shape.
C. Reeler: settlement classification using neural networks.