ABSTRACT

Approaches to compute quantitative characteristics of features derived from terrestrial data that have been provided in Chapters 5 through 7 rely on thematic information that is essentially in binary form. This chapter provides three different approaches to characterize terrestrial surface data that are in the grayscale form. These three approaches include (1) grayscale granulometries to characterize foreground and background roughness of terrestrial surfaces, (2) computation of convexity measures that are akin to channel density, and (3) computation of geodesic spectrum that provides one-dimensional (1-D) geometric support of terrestrial basins.