Linearization of Mammograms Using Parameters Derived from Noise Characteristics

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

• Type: Conference
• Year: 2005
• Where: IPMI
• Authors: Nico Karssemeijer, Peter R. Snoeren, Wei Zhang
• Keywords: Digitized Mammograms, IPMI 2005, Medical Imaging, Model Unknown Parameters, Signal Dependent Noise