Tag: speckles

[21/05/2017] New PRL: UMPA!

A new paper just published in Physical Review Letters introduces our Unified Modulated Pattern Analysis (UMPA) method, which improves speckle tracking techniques by combining multiple measurements to increase resolution and sensitivity. In the paper we demonstrate that the method applies equally well to random (speckles) and regular (e.g. grating) patterns. An implementation of the method …

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[28/06/2014] New PRL: imaging with speckles

A new paper out today in Physical Review Letters shows a demonstration of an X-ray imaging method that uses the a high-brilliance lab source to form at once four images. In addition to the traditional absorption image, the approach yields differential phase-contrast images (along x and y) as well as a dark-field image, which quantifies the …

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