Images of the environment of the star HD100546 as seen in the Ks band with NICI and with several ADI-algorithms: cADI (left), KLIP (middle), and LOCI (right). The field is 8′′ large and the central area (<1.25′′) is masked out numerically. A 2-pixel smoothing is applied. Pixel intensities are coded in contrast with respect to the star. The point source at the south corresponds to the object labeled B7 in Fig. 2.