Identification of lesion images from gastrointestinal endoscope based on feature extraction of combinational methods with and without learning process. - Ding-Yun Liu; Tao Gan; Nini Rao; Yao-Wen Xing; Jie Zheng; Sang Li; Cheng-Si Luo; Zhong-Jun Zhou; Yong-Li Wan (Medical Image Anal., 2016)