Crack Fundamental Element (CFE) for Multi-scale Crack Classification

摘要: With the advance of sensor and information technology, high-resolution 2D image 3D range data are available to support crack classification. However, classification still remains a challenge because state Departments Transportation (DOTs) engineers often use multi-scale characteristics (e.g. width/length, intersection, pattern, etc) classify types, these not fully modelled for reliable Based on new data, this paper proposes Crack Fundamental Element (CFE) characterize cracks at different scales. After an analysis fundamental characteristics, CFE is proposed line segment approximation grid cell analysis, it characterized by its density, relative area, bounding box, length, width, center, orientation. low-level CFEs, topological graphical representation is, first time, built extending CFEs into significant curves, intersecting approximating polygons closed pieces/spalls multiple The can then be classified using their density measures levels. An experimental test actual taken in Savannah, Georgia, demonstrates feasibility Future research also discussed.