Astrometric and photometric errors for the NEGFC approach (purple) and for RSM based planetary signal characterisation algorithm using the PSO approach with and without the initialisation step relying on the NEGFC approach (resp. yellow and green). The upper graph shows the dependence of the averaged rms position error on the contrast, while the bottom one shows the dependence of the photometric rms error (computed at a radial distance of 4λ/D).