Figure 10

Contour plot of the effect of area and extent object classification thresholds on mean sensitivity and specificity for segmentation of epidermis. Figure 10 shows the results of an optimisation of area and extent threshold for object classification when the object pixel area threshold was varied between 15000 and 100000 pixels, and the extent threshold varied between 0.36 and 0.46. The top plot shows the effect on sensitivity and the bottom plot shows the effect on specificity. A distance based interpolation method, with a distance power of 2 was used to plot the contours.