Figure 2From: Poisson noise removal from high-resolution STEM images based on periodic block matching Number of aggregates for local and periodic block matching. Number of aggregates n aggr, i.e., after local block matching (A) and (B) and \( {n}_{\mathrm{aggr}}^{\pi } \), i.e., after periodic block matching (B) and (D) for hard thresholding (A) and (B) and Wiener filtering (C) and (D) applied to the gallium nitride lattice in Figure 3.Back to article page