| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform reliable offset correction, and to improve a frame rate as compared with before. <P>SOLUTION: A first offset value calculation section 35 calculates a first offset value, based on a dark image other than that in photographic time photographed at time other than the photographic time of an X-ray image at a dark image photographing section 32. A second offset value calculation section 36 calculates a second offset value, based on a dark image within the photographic time photographed within the photographic time of an X-ray image at the dark image photographing section 32. Then, an offset correction section 37 performs the offset correction of an X-ray image photographed by an X-ray image photographing section 31 using first and second offset values. In this case, a storage time setting section 34 sets the storage time of charge related to the dark image within the photographic time shorter than that of charge related to the X-ray image. <P>COPYRIGHT: (C)2009,JPO&INPIT |
