Fig. 6

ROC curves of CD, CMYK, mean value of ST with three sets of training samples. Colour Deconvolution CD, CMYK colour space CMYK, mean value of ST models trained from corresponding images CorrAvg, mean value of ST models trained from mixed training images MixAvg, mean value of ST models trained from WS (TMA) training images WS(TMA)Avg. The plot at the top shows the ROC curves for CD (red dashed line), CMYK (brown dotted line), the mean value of ST models with corresponding training images (smooth green line), the mean value of ST models with mixed training images (smooth purper line), and the mean value of ST models with TMA training images (smooth blue line) on 50 WS test images; the plot at the bottom shows the ROC curves for CD, CMYK and the mean value of ST models with three sets of traning images (WS, Mixed and TMA training images) on 50 TMA test images. The horizontal axis is false-positive ratio and vertical axis is true-positive ratio