Histograms of input magnitude of primary galaxies associated with detections. Two groups are selected from the detected galaxies: 1) the ones with at least one neighbour found at a separation of < 1 arcsec given their true positions (upper panel); 2) those without any neighbours found at a separation of < 3 arcsec (lower panel). The predictions of the classifier, including blending information (orange), are shown against those of the classifier not including it (green). The results of SEXTRACTOR are plotted in blue as the ground truth.