Abstract
A method is proposed for converting digitized mammograms to a normalized representation, in which pixel values are linearly related to the logarithm of x-ray exposure. This method is based on a signal dependent noise model. By exploiting this model unknown parameters of the non-linear response of the film-screen system can be estimated from signal dependence of the image noise. The method was applied to a series of 1372 mammograms acquired over a period of 8 years. Sudden changes in estimated parameters corresponded well with the introduction of new film-screen systems.
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© 2005 Springer-Verlag Berlin Heidelberg
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Karssemeijer, N., Snoeren, P.R., Zhang, W. (2005). Linearization of Mammograms Using Parameters Derived from Noise Characteristics. In: Christensen, G.E., Sonka, M. (eds) Information Processing in Medical Imaging. IPMI 2005. Lecture Notes in Computer Science, vol 3565. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11505730_22
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DOI: https://doi.org/10.1007/11505730_22
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-26545-0
Online ISBN: 978-3-540-31676-3
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