Semantic Layers for Illustrative Volume Rendering

Direct volume rendering techniques map volumetric attributes (e.g., density, gradient magnitude, etc.) to visual styles. Commonly this mapping is specified by a transfer function. The specification of transfer functions is a complex task and requires expert knowledge about the underlying rendering technique. In the case of multiple volumetric attributes and multiple visual styles the specification of the multi-dimensional transfer function becomes more challenging and non-intuitive. We present a novel methodology for the specification of a mapping from several volumetric attributes to multiple illustrative visual styles. We introduce semantic layers that allow a domain expert to specify the mapping in the natural language of the domain. A semantic layer defines the mapping of volumetric attributes to one visual style. Volumetric attributes and visual styles are represented as fuzzy sets. The mapping is specified by rules that are evaluated with fuzzy logic arithmetics. The user specifi...

• Type: Conference
• Year: 2007
• Where: VIS
• Authors: Peter Rautek, Stefan Bruckner, M. Eduard Gröller
• Keywords: IEEE Visualization, Multiple Volumetric Attributes, VIS 2007, Visual Styles, Visualization, Volumetric Attributes