Deconvolution of the two-dimensional point-spread function of area detectors using the maximum-entropy algorithm

Graafsma, H. and Vries de, R.Y. (1999) Deconvolution of the two-dimensional point-spread function of area detectors using the maximum-entropy algorithm. Journal of Applied Crystallography, 32 . pp. 683-691. ISSN 0021-8898

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Abstract:	The maximum-entropy method (MEM) has been applied for the deconvolution of the point-spread function (PSF) of two-dimensional X-ray detectors. The method is robust, model and image independent, and only depends on the correct description of the two-dimensional point-spread function and gain factor of the detector. A significant enhancement of both the spatial resolution and the contrast ratio has been obtained for two phase-contrast images recorded with an ultra-high-resolution X-ray imaging detector. The method has also been applied to a Laue diffraction image of a protein crystal, showing an important improvement in both the peak separation of closely spaced diffraction peaks and the signal-to-noise ratio of medium and weak peaks. The principle of the method is explained and examples of its application are presented.
Item Type:	Article
Copyright:	© 2000 The International Union of Crystallography
Faculty:	Science and Technology (TNW)
Link to this item:	http://purl.utwente.nl/publications/59127
Official URL:	http://dx.doi.org/10.1107/S0021889899003817
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