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Figure 2
Left to right: DPC phase contrast image integrated using a mirror pattern, anti-symmetric pattern and high-pass filter (λ = 0.0005 times the maximum k2 value) for measurements of a (top) Siemens star, (middle) coccolith and (bottom) drop-cast Fe particles. The anti-symmetric mirroring improves the low-frequency background. As the high-pass filter removes the low-frequency contributions, the mirror and anti-symmetric patterns have no impact on the resulting image.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 30| Part 1| January 2023| Pages 200-207
https://doi.org/10.1107/S1600577522010633
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