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. 2019 Jun 28;14(6):e0218776. doi: 10.1371/journal.pone.0218776

Fig 4. The robustness of the BLD in comparison to the DC for contour recognition.

Fig 4

Here, the value of the surface delimited by the green contour is the same in both cases: (a) The region which should be recognized is an ellipse (black). (b) While the original contour was not recognized well at all, the DC for such a segmentation has yet the same high value as in (a). Using the BLD, we achieve a fairer evaluation of the segmentation, as the bad contour detection is taken into account and penalized with a higher value of the BLD (which corresponds to a minor similarity).