Fig. 3
From: GeoCrack: A High-Resolution Dataset For Segmentation of Fracture Edges in Geological Outcrops
Examples of diverse fracture edges in the dataset, showcasing various annotation challenges. (A) Rock overhang obscuring fracture traces; (B) multiple parallel discontinuities resulting in step-like outcrop topography; (C) roots occluding fractures traces; (D) dilated fissures resulting in shadow occlusions; (E) surficial weathering introducing textural complexity, obfuscating trace identification; (F) fine, (apparent) discontinuous layer-bound fractures; (G) vegetation partially obscuring fracture traces; (H) dilated aperture of a curvilinear fracture introducing ambiguity into trace digitization; (I) surficial-staining and vegetation growth within fracture apertures adds complexity into trace delineation; (J) pervasively fractured carbonate with high fracture densities and non-systematic orientations offering complexity for manual digitization; (K) plants and moss nucleating within fracture apertures occluding traces; (L) complex anatomizing and ladderlike fractures connecting systematic joints introducing complexity into the digitization task.
