Here, amount is the strength of the sharpening effect. A higher value leads to a larger increase in the contrast of the sharpened pixels. During unsharp filtering, another parameter of significance is "radius," that determines the standard deviation of the distribution of the Gaussian low-pass filter. The radius controls the size of the region around the edge pixels that is affected by sharpening. A large value sharpens wider regions around the edges, whereas a small value sharpens the narrower regions around edges. For our neutron and X-ray imaging datasets, we used the radius value of 3.0. For the amount (or "weight" in ImageJ), we used the value of 0.6 for the pristine graphite anode and 0.7 for the cycled graphite anode.