Figure 2From: SHERPA: an image segmentation and outline feature extraction tool for diatoms and other objectsSeven exemplary templates used for shape detection. a) a typical Navicula, b) Gyrosigma, c) the same Gyrosigma mirrored, d) Cymbella helvetica, e-g) different variations of Sellaphora pupula. All shapes were derived from ADIAC data [44].Back to article page