Fig. 4
From: Metrics for evaluating 3D medical image segmentation: analysis, selection, and tool
The effect of decreasing the true negatives (background) on the ranking. Each of the segmentations in A and B is compared with the same ground truth. All metrics assess that the segmentation in A is more similar to the ground truth than in B. In \(\acute {A}\), the segmentation and ground truth are the same as in A, but after reducing the true negatives by selecting a smaller bounding cube. The metrics RI, GCE, and TNR change their rankings as a result of reducing the true negatives. Note that some of the metrics are similarities and others are distances