Figure 8
From: High-precision speckle-tracking X-ray imaging with adaptive subset size choices
PMMA spheres were recorded by a CMOS camera with the detection field of 400 × 1,400 pixels. The (a) horizontal and (b) vertical phase gradients and (c) the dark field for the subset size of 7 × 7; the (d) horizontal and (e) vertical phase gradients and (f) the dark field for the subset size of 25 × 25; the (g) horizontal and (h) vertical phase gradients and (i) the dark field for the ASC; (j) comparison of the horizontal gradient profiles (red dashed lines) with different subset size choices in (a), (d), and (g).
