| Abstract: | A method and apparatus for identifying a material in an object. An image
of the object generated from energy passing through the object is
obtained by a computer system. The computer system estimates attenuations
for pixels in a sensor system from the image of the object to form
estimated attenuations. The estimated attenuations represent a loss of
the energy that occurs from the energy passing through the object. The
computer system also identifies the material in the object using the
estimated attenuations and known attenuation information for identifying
the material in the object. |