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 RY lup dataset from a single IFS exposure. The proposed sky background estimation removes the host star remnant and the proposed reconstruction algorithm is robust to aberrant measurements (see Fig. 6). 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 = 1165 nm, cubic root stretch of the intensity, colour bar: arbitrary unit). e–h: zooms on (a–d).