Illustration of segmentations obtained by the mono-channel network using the original image (i.e., M 2 EDN-O), the mono-channel network using the preprocessed image (i.e., M 2 EDN-P), and the multi-channel network (i.e., M 2 EDN). The yellow circles indicate improved segmentations due to the use of complementary multi-channel inputs. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)