| 摘要 |
PROBLEM TO BE SOLVED: To display a cross-sectional image of a tubular observation object such as ramified blood vessels, the trachea and the intricately curved intestines by vertically cutting the observation object with a three-dimensional curved face extended along the observation object. SOLUTION: Intersections between a visual point path passing the approximate center of the observation object 12 included in a three-dimensional original image, and cross section images 1, 2, 3 cutting the observation object 12 at specified spaces are obtained (figure 11(a)). Cutting straight lines or cutting curves on the cross section images 1, 2, 3 passing the intersections are obtained (figure 11(b)). In the case the number of intersections is one as in the cross section image 1, a straight line is obtained using the information of the cutting straight line or cutting curve across the intersection, and a cross-sectional image is formed by adding the sequence of points on the cutting straight line or cutting curve obtained every cross section image. |
