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Fig. 10 | Advanced Structural and Chemical Imaging

Fig. 10

From: Optimal principal component analysis of STEM XEDS spectrum images

Fig. 10

Schematic dependence of the noise variance on the total count in a weighted spectrum-image. In the “saturated” limit, the noise variance is approaching 1 and is equalized over a whole dataset. In the “diluted” limit, the noise variance is constrained by the linear dependence on the total counts and can not be equalized

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