At least projection of portion of the surface inside the body of the human or the animal, being the method of detecting from 3 dimensional digital data which displays the aforementioned surface or that portion the description above, at least being one which the 2nd method curvature which possesses the curvature value which than curvature value of 1st method curvature and the said 1st method curvature is closer to zero crosses point, both parties have bigger original curvature value, than zero or or step and the aforementioned 2nd method curvature which detect the surface territory which possesses the point where both parties have smaller original curvature value than zero from the aforementioned 3 dimensional digital dataIn order to possess the curvature value whose than that original curvature value is closer to zero and is modified, it possesses with the step which modifies aforementioned 2nd method curvature digitally, as the deformation surface territory is constituted by aforementioned modification, as for deformation of the aforementioned deformation surface territory for the surface territory where the aforementioned surface territory becomes deformed digitally, the description above is detected, the method of being related to the size of projection.人間又は動物の体の内部の表面の少なくとも一部の突起を、前記表面又は前記それの一部を表す3次元デジタルデータから検出する方法であって、第1法曲率と、該第1法曲率の曲率値よりゼロに近い曲率値を有する第2法曲率とが交差する少なくとも1つのポイントであって、双方がゼロより大きなオリジナルの曲率値を有するか、又は双方がゼロより小さなオリジナルの曲率値を有するポイントを有する表面領域を前記3次元デジタルデータから検出するステップと、前記第2法曲率がそれのもとの曲率値よりゼロに近い変更された曲率値を有するように、前記第2法曲率をデジタル変更するステップとを有し、前記変更によって、変形表面領域が構成されるように、前記表面領域がデジタル変形され、前記検出された表面領域に対する前記変形表面領域の変形の程度は、突起の大きさに関連する方法。
