Patent Document ID: 20150235725
Application ID: 14596615
Patent Status: 0

Claim One:
1. An X-ray imaging system comprising: an X-ray source which emits an X-ray; a first grating having a periodic pattern and disposed in an X-ray propagating path; a second grating which converts the periodic pattern of the first grating into a moire stripe pattern; an X-ray detector including two-dimensionally arrayed transducers which generate an electrical signal corresponding to the incident X-ray emitted from the X-ray source and passing through the first grating and the second grating, the X-ray detector reading the electrical signal generated by the transducers as an image signal to acquire a moire stripe image; a reconstructed image generating member which generates at least one reconstructed image of a differential phase image and a small-angle scattering image of an object based on a moire stripe image not including the object and a moire stripe image including the object, the moire stripe image not including the object being acquired through irradiation of an object position without the object in the X-ray propagating path with the X-ray from the X-ray source, the moire stripe image including the object being acquired through irradiation of the object at the object position with the X-ray from the X-ray source; a detecting member which detects a salt and pepper noise region in the reconstructed image based on at least one characteristic value of the moire stripe image not including the object and/or the moire stripe image including the object; a masked-image generating member which generates a masked image for identifying the detected salt and pepper noise region; and an image processing member which masks or trims at least one of the reconstructed image and the moire stripe images with the generated masked image.