Parametric keyframe interpolation incorporating kinetic adjustment and phrasing control
Parametric keyframe interpolation incorporating kinetic adjustment and phrasing control
复制标题
参数关键帧插值结合了动力学调整和乐句控制
DOI：
10.1145/325334.325243
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
N. Badler
中科院分区：
文献类型：
--
作者：
Scott N. Steketee;N. Badler
参数关键帧设置是一种流行的动画技术，其中控制建模对象的位置、方向、大小和形状的参数值在关键时刻确定，然后进行插补以获得平滑动画。通常，由关键帧定义的参数值通过样条技术进行内插，其结果是参数变化动力学由给定的关键帧时间和数据点隐式定义。对现有的动画插补系统进行了检查，发现它们缺乏某些所需的特性，例如加速度的连续性或方便的运动控制。分析了动画插补的要求，以确定一个令人满意的系统的特性。开发并实现了一种新的插补系统，它结合了二阶导数连续性(加速度连续性)、局部控制、方便的运动控制以及连续运动的拼接和短语。措辞控制包括对单独定义的运动之间的流畅程度和程度进行参数控制的能力。
Parametric keyframing is a popular animation technique where values for parameters which control the position, orientation, size, and shape of modeled objects are determined at key times, then interpolated for smooth animation. Typically the parameter values defined by the keyframes are interpolated by spline techniques with the result that the parameter change kinetics are implicitly defined by the given keyframe times and data points. Existing interpolation systems for animation are examined and found to lack certain desirable features such as continuity of acceleration or convenient kinetic control. The requirements of interpolation for animation are analyzed in order to determine the characteristics of a satisfactory system. A new interpolation system is developed and implemented which incorporates second-derivative continuity (continuity of acceleration), local control, convenient kinetic control, and joining and phrasing of successive motions. Phrasing control includes the ability to parametrically control the degree and extent of smooth motion flow between separately defined motions.