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Fast Display of Illuminated Field Lines

Please always quote using this URN: urn:nbn:de:0297-zib-2686
  • A new technique for interactive vector field visualization using large numbers of properly illuminated field lines is presented. Taking into account ambient, diffuse, and specular reflection terms as well as transparency and depth cueing, we employ a realistic shading model which significantly increases quality and realism of the resulting images. While many graphics workstations offer hardware support for illuminating surface primitives, usually no means for an accurate shading of line primitives are provided. However, we show that proper illumination of lines can be implemented by exploiting the texture mapping capabilities of modern graphics hardware. In this way high rendering performance with interactive frame rates can be achieved. We apply the technique to render large numbers of integral curves of a vector field. The impression of the resulting images can be further improved by a number of visual enhancements, like transparency and depth-cueing. We also describe methods for controlling the distribution of field lines in space. These methods enable us to use illuminated field lines for interactive exploration of vector fields.

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Author:Detlev Stalling, Malte Zöckler, Hans-Christian HegeORCiDGND
Document Type:ZIB-Report
Date of first Publication:1997/01/06
Series (Serial Number):ZIB-Report (SC-96-58)
Published in:Appeared in: IEEE Trans. on Visualization and Computer Graphics 3 (1997) 118-128
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