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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.