Simulated sources and filaments with H = 8′′ and their median-filtered W = 4 counterparts (cf. Sect. 2.1). The two upper rows show the simulated Gaussian structures , , in panels a–d and their median-filtered images in panels e–h. The two bottom rows show the simulated power-law structures , , , in panels i–l and their median-filtered images in panels m–p. The images with an intensity range of [−0.3,100 ] and sizes of 200′′ are profiled in Fig. 1. The images are displayed with logarithmic color scaling.