Image registration, color correction, and change detection based on value of difference in sequential ocular fundus images. - Satoshi Sakuma; Tadashi Nakanishi; Yasuko Takahashi; Yuichi Fujino; Sakuichi Ohtsuka; Akira Tomono; Norimasa Nakanishi; Tetsuro Tsubouchi; Tsuyoshi Tanino (Syst. Comput. Jpn., 2006)