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Table 5 Results analyzing 383 images [60] depicting Sellaphora valves (plus one centric diatom)

From: SHERPA: an image segmentation and outline feature extraction tool for diatoms and other objects

 

Identified as Sellaphora pupula

Identified as other1)

Ranking 0

318

4

Ranking 1

25

7

Ranking 2

2

1

  1. 1)One centric diatom was present in the data set, the other valves identified as being not Sellaphora have a similar shape and therefore cannot be distinguished when using the large template set.
  2. All five segmentation methods were used (RATS with σ range 1 to 11) and contour optimization was applied.