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Comparison of VS and human observer performances when the models included the search thresholding and noise processes controlled by pt and σt, respectively. (a) The MF–CNPW observer; (b) the GMF–CNPW observer; (c) the MF–GMF observer; and (d) the GMF–GMF observer. The model-observer error bars for the nonzero σt examples indicate the standard deviation in AL from ten study realizations.
