Projected map of the active pixels associated with the substructures identified by the first step of the identification performed by SubDLe (through a 3D U-Net) in a run on a whole cluster, CL-5 at z = 0. The blobs of active pixels (non-white, see the colormap on the right) need to be grouped together to identify subhalos, since at this stage all subhalos are associated with the same class label.