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A Hierarchical Approach to Interactive Motion Editing for Human-like Figures (1999)
| Citations: | 227 - 16 self |
BibTeX
@INPROCEEDINGS{Lee99ahierarchical,
author = {Jehee Lee and Sung Yong Shin},
title = {A Hierarchical Approach to Interactive Motion Editing for Human-like Figures},
booktitle = {},
year = {1999},
pages = {39--48}
}
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Abstract
This paper presents a technique for adapting existing motion of a human-like character to have the desired features that are specified by a set of constraints. This problem can be typically formulated as a spacetime constraint problem. Our approach combines a hierarchical curve fitting technique with a new inverse kinematics solver. Using the kinematics solver, we can adjust the configuration of an articulated figure to meet the constraints in each frame. Through the fitting technique, the motion displacement of every joint at each constrained frame is interpolated and thus smoothly propagated to frames. We are able to adaptively add motion details to satisfy the constraints within a specified tolerance by adopting a multilevel B-spline representation which also provides a speedup for the interpolation. The performance of our system is further enhanced by the new inverse kinematics solver. We present a closed-form solution to compute the joint angles of a limb linkage. This analytical m...
Keyphrases
interactive motion editing hierarchical approach human-like figure motion detail limb linkage motion displacement new inverse kinematics multilevel b-spline representation spacetime constraint problem new inverse kinematics solver hierarchical curve fitting technique closed-form solution fitting technique human-like character articulated figure joint angle
