To provide a transparent baseline, the ranked predictions were also compared with a raw similarity method based on direct Euclidean distance in the original pixel-value space. sPCA recovered Figure 9 - Reconstruction progression of Deposit 6 as more principal components are retained. The main dipole structure is recovered by $K = 17$, with only minor changes and noise beyond this point. Figure 8. Regional map of the top 250 ranked windows in the multivariate Case 2 analysis. The map shows the Alemão training deposit (Deposit 3), known test deposits, and the windows identified from the combined TMI + radiometric U similarity analysis.
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