Fig. 4
From: Machine learning as a tool for classifying electron tomographic reconstructions
Noisy misaligned reconstruction, processed with NAD. a A WBP reconstruction of projections which have been randomly misaligned and given Poisson noise. b The reconstruction from (a) processed with NAD. c The result of a 5-level Otsu threshold operation on the processed image. d The histogram for (b) with the threshold levels indicated. a Inset regions are ×2 magnified from the phantom (left) and the plain reconstruction; b the NAD-filtered reconstruction (right). The contrast in the right inset of (b) has been enhanced for the purpose of improved visibility