[4]Chang Y C,Song G S,Hsu S K.Automatic extraction of ridge and valley axes using the profile recognition and polygon-breaking algorithm[J].Computers and Geosciences,1998,24(1):89~93.
[3]Raghavan V,Masumoto S,Koike K et al.Automatic lineament extraction from digital images using a segment tracing and rotation transformation approach[J].Computers and Geosciences,1995,21(4):555~591.