Figure 3
Workflow of automatic ROIs setting (automatic determination of ROIs). (a) Three clusters of merged X-rays hit positions with 17 linear distributions in one module of the 2D-PSD. The points have been reduced by 10 times to distinctly show the distribution. (b) Initially assigned three arbitrary centers of the clusters (black circles). (c) X-ray hit positions surrounding the cluster centers. (d) Reassigned locations of the three cluster centers. (e) Data clusters reassigned to new cluster centers. (f) Clusters and cluster centers are finally determined. (g) Three ROIs are automatically determined based on the clusters and their centers. |