Relative correction of photoresponse non-uniformity of γ-ray scintillator arrays

Scintillator arrays are used in radiation image detection generally. A relative correction method was proposed based on the severe photoresponse nonuniformity of scintillator arrays. The attenuation distribution of the detected object to γ-ray could be detected via background image, reference image and radiation image on the condition that the light source parameter，CCD camera parameter and optical system parameter were all unknown. The justification experiment was performed and the outcome showed that the influence of both the photoresponse non-uniformity and the inherent distribution of radiation source could be eliminated．