Column density (K) maps obtained for filament-like (left) and sheet-like (right) density structures with different wiggle parameters. The wiggle intensity (w_i) is constant in columns and increases from left to right, and the wiggle correlation length (w_c) is constant in rows and increases from top to bottom. In our settings, w_i and w_c have units of [pc/(100 × 200)]. The shape parameters of filaments and sheets are the same in each panel and read as follows (in pc): Filaments: L ϵ [7, 25] and R ϵ [1.5, 4.5], and sheets: L ϵ [5, 20], R₁₂ ϵ [10, 20] and R₁₃ ϵ [1, 3] (see Sect. 2.1.4 and Table 1 for the parameter definitions and labels.) The circular regions displayed on these maps have an angular radius of 12.53°. All maps share the same color scale, which is expressed in 10²¹ cm^–2.