Determination of point spread function for a flat-panel X-ray imager and its application in image restoration
We investigate the image blur estimation methods, namely modified the Richardson-Lucy (R-L) estimator and the Wiener estimator. Based on the empirical model of the PSF, an image restoration is applied to radiological images. The accuracy of the PSF estimation under the Poisson noise and readout electronic noise is significantly better for the R-L estimator than the Wiener estimator. In the image restoration using the 2-D PSF from the R-L estimator, the result shows a good improvement in the low and middle range of spatial frequency. (c) 2006 Elsevier B.V. All rights reserved.
- Publisher
- ELSEVIER SCIENCE BV
- Issue Date
- 2006-07
- Language
- English
- Article Type
- Article; Proceedings Paper
- Citation
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, v.563, no.1, pp.167 - 171
- ISSN
- 0168-9002
- Appears in Collection
- NE-Journal Papers(저널논문)
- Files in This Item
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