Fractal/wavelet model as a deformation tool
Résumé
A Fractal model equipped with detail concept like that used in wavelet
transforms is introduced and used to perform global and local deformations
to objects. This fractal model based on Projected IFS attractors
allows the definition of free form fractal shapes controlled by a set of
points. The details concept taken from wavelet theory represents the geometric
texture of the object. An approximation step is first done to fit the
model to the object, this step is formulated as a non-linear fitting problem
and resolved using a modified Levenberg-Marquardt minimization
method. Global deformation can be achieved by moving control points or
scaling and/or rotating the details extracted from the object. In the same
manner local deformation can be applied with additional control points.
In this work, we focus on 2D curves.
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