C03: Efficient complementary viewpoint selection in volume rendering

Grau,S., Puig,A., Escalera,S., Salamo,M., Amoros,O.

Abstract:
A major goal of visualization is to appropriately express knowledge of scientific data. Generally, gathering visual information contained in the data often requires a lot of expertise from the final user to setup the parameters of the visualization. One way of alleviating this problem is to provide the position of inner structures with different viewpoint locations. It is quite common to find that traditional illustrations use two or more different views of the regions of interest to enhance the perception and construction of the mental image. To this end, traditional illustrations use two or three different views of the regions of interest. Similarly, with the aim of assisting the users to easily place a good viewpoint location, this paper proposes an automatic and interactive method that locates different complementary viewpoints from a reference camera. Specifically, the proposed method combines the quantity of information each camera provides and the shape similarity of the projections of the remaining viewpoints based on Dynamic Time Warping. The selected complementary viewpoints allow a better understanding of the focused feature in several applications. Thus, the user interactively receives feedback based on several viewpoints that helps them to understand the visual information. The empirical results on different data sets show a good convergence to useful complementary
viewpoints.