Figure 6.

Confusion matrix of the test pixel accuracy where $N_{train}=4$ and $N_{test}=4$: (a) Copy-Paste [25] and (b) ours. The labels 0 to 10 respectively denote the background, IRT2000 nuclear fuel, Magnox nuclear fuel, PLUS7 nuclear fuel, P4-type gas centrifuge, pulsed column, mixer–settler, dissolver, reduction furnace, rotary kiln, and P2-type gas centrifuge.