增强骨骼动画运动细节的关键帧插值方法
A Key Frame Interpolation Method Enhancing Motion Details of Skeletal Animation
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摘要: 为了增强人体骨骼运动细节的表达,提出了基于关键帧分类的虚拟人运动插值方法.此方法以人体骨骼间夹角为动作特征,在运动捕获数据的关键帧基础上,将关键帧集合根据其运动特性的不同划分为3类:普通关键帧、变速关键帧、摆动关键帧.在插值阶段依据关键帧类型分别采用线性插值、二次多项式插值和三次多项式插值计算中间帧,最终获得反应运动细节的关键帧动画.实验结果表明,该方法能在最终合成的人体动画中较好地模拟手臂摆动和变速运动的运动效果.Abstract: This paper presents a key frame interpolation method,which can represent swing and variable motion for virtual human animation.Based on motion features of angles between bones,key frames are extracted from captured motion data using curve simplification method.Key frames are classified through motion details,and different interpolation methods are used to compute internal frames for different class.Experiments show that method provided by this paper can simulate arm's swing and variable motion animation.