SEMI-AUTOMATED EXTRACTION OF GEOLOGICAL DISCONTINUITIES FROM 3D VIRTUAL OUTCROP MODEL BASED ON UAV PHOTOGRAMMETRY: A CASE STUDY FROM THE KROL BELT OF LESSER HIMALAYA, INDIA

Bhagirathi Panigrahi1, Deepak Chandra Srivastava1, Amar Agarwal2 and Sonal Tiwari2, (1)Indian Institute of Technology Roorkee, Roorkee, India, (2)Indian Institute of Technology Kanpur, Kanpur, India