Figure 1.
Various problems where images are to be segmented into multiple interacting objects: a) an MRI of the abdomen, showing many organs; b) fluorescent microscopy imaging involving complex interactions of multiple cells; c) a parcellation of the cortex into 78 gyral regions; c) images and videos of sporting events where the different players interact; d) aerial images of crops and farmlands. These examples were obtained from computer vision and medical imaging databases [3, 26, 27] or our own work (c) [28].