Transfer Function Design Using Acting Force Model

Transfer function plays an important role in volume rendering. Multi-dimension transfer function can achieve high rendering quality, but suffer from troublesome user specifications. In order to reduce the complexity of manipulations, a transfer function design method based on dimension reduction model is proposed in this paper. The idea of dimension reduction model is to integrate several data features into one index for transfer function. This paper also presents one instance of dimension reduction model called acting force model (AFM) to verity the effectiveness. In AFM, one integrated index is calculated by applying transformative universal gravitation formula and kinetic energy formula to three data features: scalar value, gradient and coherence distance. The experiments demonstrate the proposed method can produce flexible results without overloading the users.