The secondary outcome measure was FFD (Finger-floor distance).
次要测量指标FFD（指地距）。
Direct manipulation of FFD improves controllability and efficiency of the deformation.
FFD的直接操作为变形提供了更直观更方便的控制手段。
Body modeling and FFD (Free form Deformation) methods are key techniques in the field of body digitalization.
人体曲面建模与自由变形方法是实现人体数字化的关键技术。
We improved FFD extrapolation operator to compensate the amplitude difference generated by geometry diffusion loss.
通过改进傅立叶有限差分的延拓算子，补偿了几何扩散损失引起的振幅误差。
The worst case of DLPT algorithm is also discussed. It is described that DLPT algorithm is better than FFD algorithm in some ways.
给出了一个直观性算法，并研究这个算法的最坏情形，最后说明此算法在某些方面优于著名的FFD算法。
The worst case of DLPT algorithm is also discussed. It is described that DLPT algorithm is better than FFD algorithm in some ways.
给出了一个直观性算法，并研究这个算法的最坏情形，最后说明此算法在某些方面优于著名的FFD算法。
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