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VISUALIZATION
2003
IEEE

Curvature-Based Transfer Functions for Direct Volume Rendering: Methods and Applications

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Curvature-Based Transfer Functions for Direct Volume Rendering: Methods and Applications
Direct volume rendering of scalar fields uses a transfer function to map locally measured data properties to opacities and colors. The domain of the transfer function is typically the one-dimensional space of scalar data values. This paper advances the use of curvature information in multi-dimensional transfer functions, with a methodology for computing high-quality curvature measurements. The proposed methodology combines an implicit formulation of curvature with convolution-based reconstruction of the field. We give concrete guidelines for implementing the methodology, and illustrate the importance of choosing accurate filters for computing derivatives with convolution. Curvature-based transfer functions are shown to extend the expressivity and utility of volume rendering through contributions in three different application areas: nonphotorealistic volume rendering, surface smoothing via anisotropic diffusion, and visualization of isosurface uncertainty. CR Categories: I.3.7 [Com...
Gordon L. Kindlmann, Ross T. Whitaker, Tolga Tasdi
Added 05 Jul 2010
Updated 05 Jul 2010
Type Conference
Year 2003
Where VISUALIZATION
Authors Gordon L. Kindlmann, Ross T. Whitaker, Tolga Tasdizen, Torsten Möller
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