An improved label fusion approach with sparse patch-based representation for MRI brain image segmentation - Meng Yan; Hong Liu; Xiangyang Xu; Enmin Song; Yuejing Qian; Ning Pan; Renchao Jin; Lianghai Jin; Shaorong Cheng; Chih-Cheng Hung (Int. J. Imaging Syst. Technol., 2017)