Spatial Pose Trees: Creating and Editing Motions Using a Hierarchy of Low Dimensional Control Spaces

Spatial pose trees are a representation of motion that organizes motion data as a hierarchy of components. Each component has an associated set of target poses, as well as a user‐editable 3D control space for creating motion by pose interpolation. This hierarchical partitioning, along with a selective display of poses relevant to a particular motion component, allows users to easily navigate large sets of poses that would be impractical to manage with a single layout. In addition to providing a system for creating motion with this representation, we present techniques for embedding and subsequently editing existing motions, as control curves within a control space. Users can introduce new poses to a control space, either to edit a motion for aesthetic reasons or to meet specific constraints, or to reduce interpolation error. Edited motions introduce new control curves, with associated poses created by interpolation or displacement mapping. This results in a region of control space that produces motions that meet changing constraints. To assist users with system interaction, we introduce tools for simplifying hierarchy construction and 3D control space navigation.

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