Fig. 1. Structure diagram and principle diagram of scintillator array

Fig. 2. Examples of experiment image, empty field image and dark current image

Fig. 3. Examples of empty field images and dark current image collected before the experiment

Fig. 4. Experimental image with scintillator array artifacts and the image after correction

Fig. 5. Artifact of corrected image in high vibration environment

Fig. 6. Direct correction using mismatched empty field image

Fig. 7. Corrected images using empty field images with different displacements

Fig. 8. Relationship curve between standard deviation data of corrected image and displacement amount of empty field image

Fig. 9. Comparison of corrected images after different displacement of empty field image

Fig. 10. Relationship curve between the standard deviation data of the corrected image and the displacement amount of the empty field image