Multiscale Linear/Median Hybrid Filters for Noise Reduction in Low Dose X-Ray Images

  title={Multiscale Linear/Median Hybrid Filters for Noise Reduction in Low Dose X-Ray Images},
  author={Til Aach and Dietmar Kunz},
This contribution describes a new filtering technique f o r the reduction of noise in medical x-ray amages acquired with very low doses, like fluoroscopy imayes. In such imoges, only between 10 ond 200 x-ray quanta contribute t o each pixel. The resulting Poisson statistic causes a strong deterioration of image quality b y quantum noise, which, in the observed images, is signal-dependent and exhibits a lowpass-shaped power spectrum. The central part of our approach is a linear/median hybrid… CONTINUE READING


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