TY  - JOUR
AU  - Alfeld, Matthias
AU  - Wahabzada, Mirwaes
AU  - Bauckhage, Christian
AU  - Kersting, Kristian
AU  - Wellenreuther, Gerd
AU  - Barriobero-Vila, Pere
AU  - Requena, Guillermo
AU  - Boesenberg, Ulrike
AU  - Falkenberg, Gerald
TI  - Non-negative matrix factorization for the near real-time interpretation of absorption effects in elemental distribution images acquired by X-ray fluorescence imaging
JO  - Journal of synchrotron radiation
VL  - 23
IS  - 2
SN  - 1600-5775
CY  - Chester
PB  - IUCr
M1  - PUBDB-2016-05391
SP  - 579 - 589
PY  - 2016
N1  - (c) International Union of Crystallography. Post referee full text in progress. 
AB  - Elemental distribution images acquired by imaging X-ray fluorescence analysis can contain high degrees of redundancy and weakly discernible correlations. In this article near real-time non-negative matrix factorization (NMF) is described for the analysis of a number of data sets acquired from samples of a bi-modal α+β Ti-6Al-6V-2Sn alloy. NMF was used for the first time to reveal absorption artefacts in the elemental distribution images of the samples, where two phases of the alloy, namely α and β, were in superposition. The findings and interpretation of the NMF results were confirmed by Monte Carlo simulation of the layered alloy system. Furthermore, it is shown how the simultaneous factorization of several stacks of elemental distribution images provides uniform basis vectors and consequently simplifies the interpretation of the representation.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000371387900025
C6  - pmid:26917147
DO  - DOI:10.1107/S1600577515023528
UR  - https://bib-pubdb1.desy.de/record/312219
ER  -