Comparison of the input and recovered gradient magnitudes. The gradient of the input model is plotted in 128 radial bins. The shaded regions show the median and 1σ percentiles of the pixels in each radial bin from recovered gradient maps. The S/N = 30 results are taken from A.2. Also shown is the effect of increasing the signal to noise ratio of the input image and smoothing by factors of 2 and 4.