A clustering based method for collagen proportional area extraction in liver biopsy images. - Nikolaos Giannakeas; Markos G. Tsipouras; Alexandros T. Tzallas; Kalliroi Kyriakidi; Zoe E. Tsianou; Pinelopi Manousou; Andrew Hall; Evaggelos Karvounis; Vasileios Tsianos; Epameinondas Tsianos (EMBC, 2015)