In x-ray imaging, the interaction of stray x-rays with an imaging sensor may produce speckle-type noise (i.e. zingers) which produces artifacts in tomography reconstructions. Zinger reduction can be accomplished through detector design and image filtering. A standard method for zinger filtering exists but produces many false positives and high discrepancy with the true signal. An approach is proposed through selective temporal frame averaging in which zinger noise is removed with improvements over the standard method. The accuracy of the proposed approach is compared with a standard approach using simulated projections of a phantom containing known artificial zinger and locations density.
|Original language||English (US)|
|Number of pages||11|
|Journal||Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|State||Published - Nov 11 2015|
ASJC Scopus subject areas
- Nuclear and High Energy Physics