| Abstract | An open-source background-oriented schlieren (BOS) dataset is presented, comprising 70 views of high-speed flow over a flight body. Sample analyses are performed using a neural-implicit reconstruction technique (NIRT) with total variation regularization as well as data assimilation via the 3D compressible Euler equations. Limited-data reconstructions based on nine views resolve sharp shocks consistent with the geometry, reproduce validation deflections with high fidelity, and exhibit minimal artifacts. Data assimilation recovers unmeasured fields, marking the first demonstration of 3D state estimation directly from experimental schlieren measurements. The NIRT also enables efficient uncertainty quantification, providing insight into well-resolved flow features and guiding design-of-experiments efforts. All the components needed for BOS algorithm development and benchmarking are provided. This release includes computer-aided designs, image data (calibration, flow-off, flow-on, masks), deflection estimates, 3D reconstructions, and the full tomography codebase. Public access to the data and code repositories is provided here; this dataset has been cleared under PA# AFRL-2025-4347. |
