S/N maps for full-frame PCA (left), annular PCA (middle), and our LLSG decomposition (right) showing the values of each fake companion S/N. With our algorithm the four injected companions are clearly revealed. The S/N of the fake companion at 2λ/D is clearly at the level of the noise (false negative) in the case of full-frame PCA and its annular version. With LLSG we reach a peak S/N that is three times higher. For the rest of synthetic companions, the S/N obtained with LLSG is up to three times higher than the one obtained with full-frame PCA.