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Visualization and Computer Graphics on Isotropically Emissive Volumetric Displays
March/April 2009 (vol. 15 no. 2)
pp. 221-234
Benjamin Mora, University of Wales Swansea, Swansea
Ross Maciejewski, Purdue University, West Lafayette
Min Chen, University of Wales Swansea, Swansea
David S. Ebert, Purdue University, West Lafayette
The availability of commodity volumetric displays provides ordinary users with a new means of visualizing 3D data. Many of these displays are in the class of isotropically emissive light devices, which are designed to directly illumi-nate voxels in a 3D frame buffer, producing X-ray-like visu-alizations. While this technology can offer intuitive insight into a 3D object, the visualizations are perceptually different from what a computer graphics or visualization system would render on a 2D screen. This paper formalizes rendering on isotropically emissive displays and introduces a novel technique that emulates traditional rendering effects on isotropically emissive volumetric displays, delivering results that are much closer to what is traditionally rendered on regular 2D screens. Such a technique can significantly broaden the capa-bility and usage of isotropically emissive volumetric displays. Our method takes a 3D dataset or object as the input, creates an intermediate light field, and outputs a special 3D volume dataset called a lumi-volume. This lumi-volume encodes approximated rendering effects in a form suitable for display with accumulative integrals along unobtrusive rays. When a lumi-volume is fed directly into an isotropically emissive volumetric display, it creates a 3D visualization with [...]

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Index Terms:
Picture/Image Generation, Raster display devices, Viewing algorithms, Three-Dimensional Graphics and Realism
Benjamin Mora, Ross Maciejewski, Min Chen, David S. Ebert, "Visualization and Computer Graphics on Isotropically Emissive Volumetric Displays," IEEE Transactions on Visualization and Computer Graphics, vol. 15, no. 2, pp. 221-234, March-April 2009, doi:10.1109/TVCG.2008.99
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