InSituNet: Deep Image Synthesis for Parameter Space Exploration of Ensemble Simulations
This addresses the need for more flexible analysis in scientific visualization for researchers using ensemble simulations, though it is incremental as it builds on existing image-based approaches.
The paper tackles the problem of limited post-hoc exploration in in situ visualization of large-scale ensemble simulations by proposing InSituNet, a deep learning surrogate model that learns to map simulation and visualization parameters to visualization results, enabling flexible parameter space exploration and demonstrating effectiveness in combustion, cosmology, and ocean simulations.
We propose InSituNet, a deep learning based surrogate model to support parameter space exploration for ensemble simulations that are visualized in situ. In situ visualization, generating visualizations at simulation time, is becoming prevalent in handling large-scale simulations because of the I/O and storage constraints. However, in situ visualization approaches limit the flexibility of post-hoc exploration because the raw simulation data are no longer available. Although multiple image-based approaches have been proposed to mitigate this limitation, those approaches lack the ability to explore the simulation parameters. Our approach allows flexible exploration of parameter space for large-scale ensemble simulations by taking advantage of the recent advances in deep learning. Specifically, we design InSituNet as a convolutional regression model to learn the mapping from the simulation and visualization parameters to the visualization results. With the trained model, users can generate new images for different simulation parameters under various visualization settings, which enables in-depth analysis of the underlying ensemble simulations. We demonstrate the effectiveness of InSituNet in combustion, cosmology, and ocean simulations through quantitative and qualitative evaluations.