Correction: Large-scale particle shadow tracking and orientation measurement with collimated light (Experiments in Fluids, (2023), 64, 3, (52), 10.1007/s00348-023-03578-y)

In this article, there is a black background Figs. 1, 2 and 3. The incorrect and correct versions of Figs. 1, 2 and 3 are given below: (Figure presented.) (Figure presented.) (Figure presented.) Shadow imaging setup showing the LED light source, camera array, Fresnel lens, and projected light in the tank (a) and a top-view schematic showing the collimation of the light rays and camera lines of sight (b) Image processing steps to detect particle shadows: (a) a raw image from one camera (the right-most camera in this case); (b) image inversion and background subtraction; (c) adaptive binarization and particle detection, with the major and minor axes of the shadows shown with red and blue lines, respectively; (d) four simultaneous images covering the entire field of view; and (e) all detected particles Definition of the particle orientation vector for a rod (a) and disk (b) relative to the laboratory coordinate system Original article has been updated accordingly.