Accelerating Transfer Function Update for Distance Map based Volume Rendering
<|reference_start|>Accelerating Transfer Function Update for Distance Map based Volume Rendering: Direct volume rendering using ray-casting is widely used in practice. By using GPUs and applying acceleration techniques as empty space skipping, high frame rates are possible on modern hardware. This enables performance-critical use-cases such as virtual reality volume rendering. The currently fastest known technique uses volumetric distance maps to skip empty sections of the volume during ray-casting but requires the distance map to be updated per transfer function change. In this paper, we demonstrate a technique for subdividing the volume intensity range into partitions and deriving what we call partitioned distance maps. These can be used to accelerate the distance map computation for a newly changed transfer function by a factor up to 30. This allows the currently fastest known empty space skipping approach to be used while maintaining high frame rates even when the transfer function is changed frequently.<|reference_end|>
@article{rauter2024accelerating,
    title={Accelerating Transfer Function Update for Distance Map based Volume
  Rendering},
    author={Michael Rauter, Lukas Zimmermann, Markus Zeilinger},
    journal={arXiv preprint arXiv:2407.21552},
    year={2024},
    archivePrefix={arXiv},
    eprint={2407.21552},
    primaryClass={cs.GR cs.PF}
}