Left: residual disks after LOCI processing of the real data cube of HR 4796 taken on April 7, 2010 with a fake disk inserted at 90° from the real one. Different LOCI parameters are used and the coefficients are stored. Right: residual disk after applying those exact same LOCI coefficients to a data cube containing only the fake disk (without noise). The color scales are identical and linear for all images. The cADI and rADI reductions are shown at the bottom for comparison.