| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for measuring a joint position without fixing the movement of upper-side metameres of the joint subject to a measurement.SOLUTION: While lower-side metameres closest to a body joint subject to the measurement perform three-dimensional rotary movement about the joint, measurement is performed on four or more poses of positions and attitudes of a pair of gauge marks provided on the upper-side and lower-side metamere surfaces in both sides of the joint. Then, the positions and the attitudes of the lower-side gause marks are converted into a coordinate system, with the positions and the attitudes of the upper-side gause marks defined as references. Subsequently, a center of a sphere drawn by the trajectory of the lower-side gauge marks is calculated as a position of the joint using the coordinate-converted four or more positions and attitudes of lower-side gauge marks. |
