A sensitivity analysis method and its application in physics-based nonrigid motion modeling
A sensitivity analysis method and its application in physics-based nonrigid motion modeling
复制标题
灵敏度分析方法及其在物理非刚体运动建模中的应用
DOI：
10.1016/j.imavis.2005.08.007
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
L. Tsap
中科院分区：
文献类型：
--
作者：
Yong Zhang;Dmitry Goldgof;Sudeep Sarkar;L. Tsap
Parameters used in physical models for nonrigid and articulated motion analysis are often not known with high precision. It has been recognized that commonly used assumptions about the parameters may have adverse effect on modeling quality. In this paper, we present an efficient sensitivity analysis method to assess the impact of those assumptions by examining the model's spatial response to parameter perturbation. Numerical experiments with a synthetic model and skin tissues show that: (1) normalized sensitivity distribution can help determine the relative importance of different parameters; (2) dimensional sensitivity is useful in the assessment of a particular parameter assumption; and (3) models are more sensitive at the locations of property discontinuity (heterogeneity). The formulation of the proposed sensitivity analysis method is general and can be applied to assessment of other types of assumptions, such as those related to nonlinearity and anisotropy.
影响因子：
56.9
作者：
MUTHUPILLAI, R;LOMAS, DJ;EHMAN, RL
通讯作者：
EHMAN, RL