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**ISODATA visualization — three snapshots.** - **(1)** Five arbitrary initial cluster means plotted in 2-D spectral space. - **(2)** After the first pass — cluster means have shifted toward the actual pixel densities. - **(3)** Second pass — means have stabilized closer to true cluster centers. Source: ERDAS Field Guide, Figures 6-3/6-4/6-5, pp. 215–216.
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