SSIM coefficients of the input and output images found by GMCA for a total number of counts corresponding to a 1 Ms observation. The points are the average of all Monte-Carlo realizations at a particular ratio, and the error bars are the standard deviation of those realizations. Left panel: comparison of the image quality obtained in retrieving the Fe structure in our first toy model for different line emission-to-synchrotron ratios, between an interpolation method, a GMCA in blind mode, and a GMCA in semi-blind mode. Some images corresponding to the ratios indicated by arrows are shown in Fig. C.1. Right panel: image quality of the thermal emission structure retrieved for different ratios by a GMCA in blind mode.
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