Making Extreme Caricatures with a New Interactive 2D Deformation Technique with Simplicial Complexes
Ergün Akleman, James D. Palmer, Ryan W. Logan · 2006
In this paper, we present a new interactive 2D deformation technique to make caricatures with extreme exaggerations. In our technique, we use simplices as deformation primitives. User defined source and target shapes of each simplex primitive define local coordinates. These local coordinates determine a unique translation vector for any given point in 2D space. We also provide a set of blending functions to effectively interpolate these translation vectors from each simplex primitive to compute a combined translation. These combined translation vector are used to transform each vertex of a texture mapped grid. Deformation of the grid provide interactive deformation of the texture that is mapped to the grid.