Comparison of the injected (black lines) and extracted simulated planet spectra (color lines) using the methods described in Sect. 2: PCA (blue), the removal of a circular profile at each wavelength (orange), and the removal of a 2D polynomial at each wavelength at the position of the simulated planet (green). The S/N of the recovered spectra is computed from 2.1 to 2.25 μm (dashed vertical lines) and given in parentheses.