Figure 2

Image processing for extinction spots segmentation. The multiplicative rotational filter Murofi (to be published in a separate article) was developed to locate extinction spots in transmission images collected using a ToF beam. (a) Raw image collected studying the Fe sample. (b) a after pre-processing. (c) b after being filtered using Murofi. (d) c binarized using a threshold value. In c and d, only the sample region is shown.