Download original image
(a) Filtered high-resolution micro-CT image of Sample 2, Site B, at voxel resolution of 2.15 μm. The filter used is a non-local means filter with a search window of 21 and a pixel neighborhood of 5. (b) Binary version of (a) obtained using a combination of gradient marker-based watershed and top-hat segmentations. The pores are shown in black.