Locality-Preserving Free-Form Deformation

TL;DR

This paper introduces a locality-preserving free-form deformation method that optimizes grid handle positions to maintain local shape features, resulting in more stable and efficient shape deformation.

Contribution

It presents a novel approach to estimate grid handle locations in FFD while preserving local shape characteristics, improving robustness and user control.

Findings

The method is fast and stable.

It outperforms existing methods in efficiency and effectiveness.

User study confirms its superior deformation quality.

Abstract

This paper proposes a method to estimate the locations of grid handles in free-form deformation (FFD) while preserving the local shape characteristics of the 2D/3D input model embedded into the grid, named locality-preserving FFD (lp-FFD). Users first specify some vertex locations in the input model and grid handle locations. The system then optimizes all locations of grid handles by minimizing the distortion of the input model's mesh elements. The proposed method is fast and stable, allowing the user to directly and indirectly make the deformed shape of mesh model and grid. This paper shows some examples of deformation results to demonstrate the robustness of our lp-FFD. In addition, we conducted a user study and confirm our lp-FFD's efficiency and effectiveness in shape deformation is higher than those of existing methods used in commercial software.