Techniques to improve the accuracy of noise power spectrum measurements in digital x-ray imaging based on background trends removal.

@article{Zhou2011TechniquesTI,
  title={Techniques to improve the accuracy of noise power spectrum measurements in digital x-ray imaging based on background trends removal.},
  author={Zhong-xing Zhou and Feng Gao and Huijuan Zhao and Lixin Zhang},
  journal={Medical physics},
  year={2011},
  volume={38 3},
  pages={
          1600-10
        }
}
PURPOSE Noise characterization through estimation of the noise power spectrum (NPS) is a central component of the evaluation of digital x-ray systems. Extensive works have been conducted to achieve accurate and precise measurement of NPS. One approach to improve the accuracy of the NPS measurement is to reduce the statistical variance of the NPS results by involving more data samples. However, this method is based on the assumption that the noise in a radiographic image is arising from… CONTINUE READING

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