Volume Sculpting with 4D Spline Volumes

摘要

We present here an approach for interactive volume sculpting. The general framework used for modeling is the extended space mapping. A 4D spline volume is employed to define a 3D solid and a scalar field. While the first three coordinate are used to represent the spatial component of the volume to be sculpted, the fourth coordinate is used as a scalar, which corresponds to a function value or a volume density. Thus, the shape can be manipulated while changing the space-function coordinates. An interactive sculpting system is described. It supports global deformation using spline volumes, and local deformations implemented as real time carving.