Deformable Models
Surface deformation is important to the creation of useful and realistic
3D models. The mechanisms for controlling the models can vary from the
physical constraints of a system, or data from some type of measuring device.
Conventionally, geometric models are parametric, meaning that they usually
rely on a set of basis functions. This limits the types of shapes these
models can represent as they cannot deform much from their original shape
without some type of re-parametrization. This re-parametrization is usually
heuristically
controlled, and costly in terms of computation time. The intrinsic geometry
of the model can be difficult to meaure exactly, artifacts may be
introduced, and critical details lost. Using an implicit level-set model
avoids such problems.
A circular model deforming to fit data from a range scanner, the curve
represents the surface swept out by the scanner.
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Contact amangan@utk.edu