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On the usage of average Hausdorff distance for segmentation performance assessment: hidden error when used for ranking
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On the usage of average Hausdorff distance for segmentation performance assessment: hidden error when used for ranking
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On the usage of average Hausdorff distance for segmentation performance assessment: hidden error when used for ranking
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Journal Article
On the usage of average Hausdorff distance for segmentation performance assessment: hidden error when used for ranking
2021
Overview
Average Hausdorff distance is a widely used performance measure to calculate the distance between two point sets. In medical image segmentation, it is used to compare ground truth images with segmentations allowing their ranking. We identified, however, ranking errors of average Hausdorff distance making it less suitable for applications in segmentation performance assessment. To mitigate this error, we present a modified calculation of this performance measure that we have coined “balanced average Hausdorff distance”. To simulate segmentations for ranking, we manually created non-overlapping segmentation errors common in magnetic resonance angiography cerebral vessel segmentation as our use-case. Adding the created errors consecutively and randomly to the ground truth, we created sets of simulated segmentations with increasing number of errors. Each set of simulated segmentations was ranked using both performance measures. We calculated the Kendall rank correlation coefficient between the segmentation ranking and the number of errors in each simulated segmentation. The rankings produced by balanced average Hausdorff distance had a significantly higher median correlation (1.00) than those by average Hausdorff distance (0.89). In 200 total rankings, the former misranked 52 whilst the latter misranked 179 segmentations. Balanced average Hausdorff distance is more suitable for rankings and quality assessment of segmentations than average Hausdorff distance.
Publisher
Springer Vienna,Springer Nature B.V,Springer International Publishing,SpringerOpen
