摘要 |
<P>PROBLEM TO BE SOLVED: To correct an artifact caused by a gap of scanning positions between a pre-photographing and a main photographing. <P>SOLUTION: A radiographic system is constituted in the following. An image processing part 14 includes: a calculating part 56 for the amount of the gap of the scanning position; a scanning position correcting part 57; and a subtraction processing part 52. The calculating part 56 for the amount of the gap of the scanning position calculates the amounts of the gaps of respective scanning positions between the pre-photographing and the main photographing by detecting the difference of intensity modulation signals between the pre-photographing and the main photographing. The scanning position correcting part 57 corrects respective scanning positions to be used when a phase differential image is formed by a phase differential image forming part 50 during the main photographing, by using the amounts of the gaps calculated by the calculating part 56 for the amount of the gap of the scanning position. The subtraction processing part 52 subtracts the second phase differential image formed when the pre-photographing is performed from the first phase differential image formed when the main photographing is performed. <P>COPYRIGHT: (C)2012,JPO&INPIT |