A positioning method for digital modeling for repair planning of damage of human bone is operated in a computer. The method comprises the following steps: (A) obtaining a bone grid model: obtaining a human bone grid model that contains a damage part and a healthy part around the damage part, and defining a three-dimensional digital grid model corresponding to the damage part as a moving point group (B) obtaining a reference point group: obtaining a reference point group from a predetermined source, in which the reference point group is a three-dimensional digital grid model and corresponds to healthy bones (C) initial positioning: selecting a coincident point on the moving point group and the reference point group respectively, so that with a vector between the two coincident points, the moving point group is moved toward the reference point group and (D) refined positioning: utilizing an iterative closest point algorithm to calculate the optimum translation vector and the rotation correction matrix.一種對人體骨骼破損處進行修復規劃的數位模型定位方法,在一電腦進行操作,該方法包含有下列步驟:A)取得骨骼網格模型:取得包含患處及該患處周圍健康部位的人體骨骼網格模型,並定義該患處所對應的三維數位網格模型為一移動點群;B)取得參考點群:由一預定來源取得一參考點群,該參考點群係為一種三維數位網格模型且對應於健康的骨骼;C)初定位:於該移動點群及該參考點群上分別選取一重合點,藉由該二重合點之間的向量將移動點群移向該參考點群;以及D)精定位:利用疊代最近點演算法計算出最佳化的平移向量與旋轉修正量矩陣。
