Example from the full image simulations in both branches used for the SEXTRACTOR detection comparison. The top panels show 400 × 400 pixel cutouts from an image scene, with doubled number density ρ_n, with pixel intensities clipped between the 10^th and 90^th percentiles. Below are zoom-ins into interesting regions: Examples I. and III. illustrate a detection difference, where a realistic object lies just above the threshold, while its best-fit double-Sérsic counterpart is not detected. The zoom-ins II. and IV. show an example of a clearly more complex spiral galaxy and how this is represented in the parametric branch, highlighting the ability of the model to produce more realistic image simulations. The lower panels V. and VI. show another example cutout from the same full scene where a single object is de-blended into two components by SEXTRACTOR.