Individual registration of sources (dance). Top panel: histogram of the difference between true and measured shifts in the X direction in a simulated image; red: region-based dance (v1.5.11); blue bars: individual dance, without smoothing; green bars: individual dance with smoothing on a fixed R_neigh area; black bars: individual dance with smoothing on a fixed number N_neigh = 100 of neighbouring sources. Bottom panel: histogram of the measured shifts in the X direction in a simulated image where no shifts were applied; red bars: region-based dance (v1.5.11); green bars: individual dance with smoothing on a fixed R_neigh area; black bars: individual dance with smoothing on a fixed number N_neigh = 100 of neighbouring sources; dashed red: region-based dance on the image with shifts, for reference. See text for more details.