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Figure 4
Reduction in intra-set variability between reconstructions of simulated foam data (Nθ = 32, no noise) by using implementation-adapted filters. (Top three rows) Reconstructions of the central slice (slice No. 128) of a foam phantom. To highlight intra-set discrepancies we show the absolute difference with respect to the corresponding strip kernel reconstructions in the right half of each image. The rightmost column shows pixelwise standard deviation σ in each set. (Bottom row, left) Ground truth foam phantom slice. (Right) Histograms of standard deviations σ for all three sets. The Ram–Lak filter and Shepp–Logan filter histograms overlap.

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