| 摘要 |
PROBLEM TO BE SOLVED: To set a section in a desired three-dimensional position quickly, accurately and easily by providing an altering means for arbitrarily altering at least either of the direction and the position of an area in a three-dimensional space. SOLUTION: A reference image is stuck to a reference section SEC2, whereby images of two sections, the reference section SEC2 and a current image-pickup section SEC1 are displayed in three dimensions on a sectional position display window 402. At this time, either of the images positioned on this side such as a reference image is previously processed to a transparent image. Thus, the picked up image of the section positioned in rear or the three-dimensional model image can be observed in the transparent state. Accordingly, while the spatial position relationship between a tested body and an area to be image- picked up is precisely recognized, the area to be image-picked up can be set in a desired three-dimensional position quickly, accurately and easily, and the image of the image-picked up area can be displayed in real time to be observed. |
