Comparison between the SPHERE reduction pipeline (Delorme et al. 2017) (a,c,e,g) and the proposed PIC method (b,d,f,h) on the HR 8799 dataset from a single IFS exposure. The proposed method removes artificial background structures. a,b: coloured projection of the reconstructed hyperspectral cube (cubic root stretch of the intensity). c,d: slice of the reconstructed hyperspectral cube (at λ = 1068 nm, cubic root stretch of the intensity, colour bar: arbitrary unit). e–h: zooms on (a–d).