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.COPYRIGHT: (C)2014,JPO&INPIT【課題】計測する関節の上位の体節の動きを固定せずに関節位置を計測する方法および装置を提供する。【解決手段】計測対象の身体関節に最も近い下位体節が関節を中心として三次元的な回転運動を行う間に、関節を挟んで上位と下位の体節表面上に設けた一対の標点の位置と姿勢を4ポーズ以上で計測する。次に、下位側の標点の位置と姿勢を、上位側の標点の位置と姿勢を基準とする座標系に座標変換する。続いて、座標変換された4以上の下位側の標点の位置と姿勢を用いて、下位側の標点の軌跡が描く球の中心を関節の位置として算出する。【選択図】図3
