Figure 6
Comparison of two different filtering techniques' effects on the watershed algorithm in a single slice of sample PB10. Four different locations have been highlighted for comparison on an image which has undergone non-local means (NLM) filtering only. Annotated squares show the result of watershed grain segmentation following only NLM32 and NLM with a median filter31. Each grain can be identified by a different colour however, due to the number of grains, colours have been reused and instead the black grain boundaries split different grains of the same colour. In each annotation an example of over-segmentation is observed in the case of using NLM filtering only when compared to what might be expected from the CT image. The outer scale bar applies to all annotations. Figure created using Fiji 2.1.042 and PerGeos 1.7.0: https://www.thermofisher.com/uk/en/home/electron-microscopy/products/software-em-3d-vis/pergeos-software.html.
