| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radiographic apparatus which captures a radioscopic image suitable for diagnosis even when the shadow of a radiation grid moves with respect to a radiation detector. <P>SOLUTION: An X-ray imaging device captures a correction image on the basis of an air image, a phantom imageδand a subject image. In the capturing of the correction image, the component of direct radiation is obtained by simultaneously solving a bright equation with respect to bright pixels B1 and B2 in which the shadow of an absorption foil is not reflected and a dark equation with respect to a dark pixel group K in which the shadow S of the absorption foil is reflected. Thus, a subject image correction part can solve simultaneous equations reliably, thereby capturing the correction image suitable for diagnosis. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
