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Poisson noise removal from high-resolution STEM images based on periodic block matching

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Figure

Figure 1 Illustration of block-matching and 3D-filtering algorithm. The BM3D algorithm is demonstrated using a STEM image of a galliumnitride crystal as an example
Figure 2 Number of aggregates for local and periodic block matching.and Number of aggregates naggr, i.e., after local block matching (A) and (B) naggrπ, i.e., after periodic block matching (B) and (D) for hard thresholding (A) and (B) and Wiener filtering (C) and (D) applied to the galliumnitride lattice in Figure 3.
Figure 3 Simulated STEM images. Example frames from simulated
Table 1 PSNRs of local vs. adaptive periodic block matching
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