Deconvolution accuracy of the half maximum sizes for the power-law filaments and (Eq. (8)), separated from the flat (top), convex (middle), and concave (bottom) backgrounds, for background over-subtraction levels 0 ≤ ϵ_l ≤ 0.3 and size factors 1 ≤ f_k ≤ 2. The ratio of the modified deconvolved sizes C_j to the true model size H (Table 1) is plotted as a function of the source resolvedness . For reference, the thin black curves display D_j/H and the dashed curves visualize (O_j/2)/H for ϵ_l = {0,0.3) and f_k = {1, 2).