Fig. 4.

Material decomposition values estimated by the NN displayed in the 2-D material decomposition space. (a) The results of decomposing the known combinations of (PMMA, aluminum) thicknesses in the leave-one-out study. (b) Results from the test materials. Results are plotted for each test material and detector element, and, for the test materials, each of the five trials. Each marker type represents the detected count-rate level specified as the percent of the maximum detector count rate. The ground truth material decomposition coefficients are also plotted for each case.