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- aggregation classification "C3".
- aggregation creator B122755.
- aggregation creator person.
- aggregation creator person.
- aggregation date "2014".
- aggregation format "application/pdf".
- aggregation hasFormat 5778924.bibtex.
- aggregation hasFormat 5778924.csv.
- aggregation hasFormat 5778924.dc.
- aggregation hasFormat 5778924.didl.
- aggregation hasFormat 5778924.doc.
- aggregation hasFormat 5778924.json.
- aggregation hasFormat 5778924.mets.
- aggregation hasFormat 5778924.mods.
- aggregation hasFormat 5778924.rdf.
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- aggregation hasFormat 5778924.txt.
- aggregation hasFormat 5778924.xls.
- aggregation hasFormat 5778924.yaml.
- aggregation language "eng".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Science General".
- aggregation title "Evaluating the performance of phase retrieval and correction algorithms at large object-to-detector distance".
- aggregation abstract "In X-ray phase propagation imaging, the phase shift of the X-ray beam induced by the object is under certain conditions visible as an edge-enhancement effect in the projection data. In tomography, this effect is reconstructed as non-physical gray values, and although it can in some cases be used to increase visual contrast, these gray values can often be considered as an artifact which needs to be eliminated. To achieve this, several phase-retrieval and phase-correcting algorithms exist which allow for the reconstruction of the attenuation coefficient or the refractive index decrement when the specific conditions are met [1-4]. However, all these methods require the transport of intensity equation (TIE) to be valid. This is only the case in the near-field, yet at the same time the edge-enhancement is formed by the propagation distance. Here, we present a study on the effect of an increasing propagation distance on different phase retrieval and phase correcting algorithms. It is shown that already at a relatively small propagation distance, the processing algorithms fail due to a violation of the TIE".
- aggregation authorList BK315694.
- aggregation endPage "177".
- aggregation startPage "177".
- aggregation aggregates 5778932.
- aggregation isDescribedBy 5778924.
- aggregation similarTo LU-5778924.