Morphology-based 3D volume metamorphosis

In this paper, we present a morphology-based scheme to perform 3D volume morphing. Our proposed scheme is a non-feature-based metamorphosis technique. This method avoids tedious feature specifications to control shape transitions. However, the proposed scheme yields a satisfactory morphing sequence for several examples evaluated in this paper. The proposed method consists of three steps: (1) create a morphological difference object volume (MDOV), (2) and perform both dilationbased distance transform, and (3) erosion-based interpolation on MDOV to accomplish volume morphing. Furthermore, with combination of a well-known principal axes registration (PAR) technique, the proposed method can smoothly morph two objects with different orientations. Finally, we present some interesting preliminary experimental results to evaluate the proposed method.