Schematic diagram of the UnRTU model (IMAGE) Particuology Caption The UnRTU can obtain the 3D particle distribution of Tomographic PIV without ground truth data. Credit Duanyu Zhang, University of Shanghai for Science and Technology Usage Restrictions News organizations may use or redistribute this image, with proper attribution, as part of news coverage of this paper only. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.