Patent ID: 6370223
Filing Date: 2002-04-09
Classification: G01B,G01N,G01V

Abstract:
A method for detecting a higher density object in a lower density meat product comprising the steps of:a) obtaining a first line scan x-ray attenuation profile along a plane through the meat product using a first energy x-ray; b) obtaining at least a second line scan x-ray attenuation profile in the same plane through the meat product using a different energy x-ray; c) obtaining a surface profile of the meat product in the same plane through the meat product; d) modeling the photoelectric absorption using the line scan x-ray attenuation profiles to obtain a modified photoelectric absorption attenuation profile; e) modeling the Compton scattering effect using the line scan x-ray attenuation profiles to obtain a modified Compton scattering x-ray attenuation profile; f) performing a thickness compensation of the modified photoelectric absorption attenuation profile and modified Compton scattering x-ray attenuation profile using the surface profile; and g) applying threshold levels to the thickness compensated modified photoelectric absorption attenuation profile and thickness compensated modified Compton scattering x-ray attenuation profiles.