We present a novel approach for rendering volumetric data including the Doppler effect of light. Similar to the acoustic Doppler effect, which is caused by relative motion between a sound emitter and an observer, light waves also experience compression or expansion when emitter and observer exhibit relative motion. We account for this by employing spectral volume rendering in an emission–absorption model, with the volumetric matter moving according to an accompanying vector field, and emitting and attenuating light at wavelengths subject to the Doppler effect. By introducing a novel piecewise linearear representation of the involved light spectra, we achieve accurate volume rendering at interactive frame rates. We compare our technique to rendering with traditional point-based spectral representation, and demonstrate its utility using a simulation of galaxy formation.
Bibliographical noteKAUST Repository Item: Exported on 2023-07-11
Acknowledgements: This work was supported in part by King Abdullah University of Science and Technology (KAUST), and by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy EXC2181/1-390900948 (the Heidelberg STRUCTURES Excellence Cluster). We thank Patrick Quicker for the development of the initial prototype as part of his BSc thesis, Ralf Klessen for fruitful discussions and the Galaxy dataset, and Marco Agus for his useful comments and suggestions.
ASJC Scopus subject areas
- Computer Networks and Communications