• Advanced Imaging
  • Vol. 2, Issue 1, 015001 (2025)
Xianglei Liu1,†, Patrick Kilcullen1, Youmin Wang2, Brandon Helfield3, and Jinyang Liang1,*
Author Affiliations
  • 1Laboratory of Applied Computational Imaging, Centre Énergie Matériaux Télécommunications, Institut National de la Recherche Scientifique, Université du Québec, Québec, Canada
  • 2Reality Laboratory, Meta Platforms, Redmond, USA
  • 3Department of Physics, Concordia University, Québec, Canada
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    DOI: 10.3788/AI.2025.50001 Cite this Article Set citation alerts
    Xianglei Liu, Patrick Kilcullen, Youmin Wang, Brandon Helfield, Jinyang Liang, "Ultrahigh-speed schlieren photography via diffraction-gated real-time mapping," Adv. Imaging 2, 015001 (2025) Copy Citation Text show less
    Schematic of DRUMS photography. (a) Schematic of the system. (b) Schematic of the DMD micromirror array, regarded as the combination of two rectangular grids of pitch p highlighted by the yellow and gray colors. The inset illustrates the flipping action of the DMD micromirrors during pattern transition, with the hinge axis oriented parallel to the y′-axis.
    Fig. 1. Schematic of DRUMS photography. (a) Schematic of the system. (b) Schematic of the DMD micromirror array, regarded as the combination of two rectangular grids of pitch p highlighted by the yellow and gray colors. The inset illustrates the flipping action of the DMD micromirrors during pattern transition, with the hinge axis oriented parallel to the y-axis.
    Simulation of DRUMS photography. (a) Five representative frames of the ground truth dynamic scene. (b) Close-up phase profiles of the simulated DMD during mirror flipping, corresponding to the frames shown in (a). (c) 2D Fourier spectrum of Frame 7 with the portion of spatial frequencies blocked by the knife-edge filter shown by the green-dash-filled rectangle. (d) Simulated frames recorded by DRUMS photography corresponding to the frames and phase profiles shown, respectively, in (a) and (b). (e)–(f) Line profiles [shown by the light blue horizontal lines in (d)] of DRUMS photography (light blue solid line) and the ground truth (black dashed line) in Frame 1 (e) and Frame 10 (f).
    Fig. 2. Simulation of DRUMS photography. (a) Five representative frames of the ground truth dynamic scene. (b) Close-up phase profiles of the simulated DMD during mirror flipping, corresponding to the frames shown in (a). (c) 2D Fourier spectrum of Frame 7 with the portion of spatial frequencies blocked by the knife-edge filter shown by the green-dash-filled rectangle. (d) Simulated frames recorded by DRUMS photography corresponding to the frames and phase profiles shown, respectively, in (a) and (b). (e)–(f) Line profiles [shown by the light blue horizontal lines in (d)] of DRUMS photography (light blue solid line) and the ground truth (black dashed line) in Frame 1 (e) and Frame 10 (f).
    Characterization of the performance of DRUMS photography. (a) DRUM photography of the USAF 1951 resolution target under continuous-wave illumination. (b) DRUMS photography corresponding to the resolution target in (a). Close-up views show the details of Group 6 Element 2. (c) Comparison of line profiles of Group 4 Element 1 [shown by the light blue line in (b)] between DRUM photography (black dashed line) and DRUMS photography (blue solid light line). (d) DRUM photography of a fracture in a glass microscope slide under continuous-wave illumination modulated with a 50% duty cycle square wave at 2.5 Hz. (e) DRUMS photography corresponding to the scene in (d). (f) Time history of the normalized light intensity of the local region marked by a light blue rectangle in (e).
    Fig. 3. Characterization of the performance of DRUMS photography. (a) DRUM photography of the USAF 1951 resolution target under continuous-wave illumination. (b) DRUMS photography corresponding to the resolution target in (a). Close-up views show the details of Group 6 Element 2. (c) Comparison of line profiles of Group 4 Element 1 [shown by the light blue line in (b)] between DRUM photography (black dashed line) and DRUMS photography (blue solid light line). (d) DRUM photography of a fracture in a glass microscope slide under continuous-wave illumination modulated with a 50% duty cycle square wave at 2.5 Hz. (e) DRUMS photography corresponding to the scene in (d). (f) Time history of the normalized light intensity of the local region marked by a light blue rectangle in (e).
    DRUMS photography of laser-induced breakdown in distilled water. (a) Schematic of the experimental setup. (b) Selected DRUMS photography frames showing the evolution of the laser-induced plasma channel in distilled water using a 7 µJ pump pulse. (c) Time history of the channel length.
    Fig. 4. DRUMS photography of laser-induced breakdown in distilled water. (a) Schematic of the experimental setup. (b) Selected DRUMS photography frames showing the evolution of the laser-induced plasma channel in distilled water using a 7 µJ pump pulse. (c) Time history of the channel length.
    Xianglei Liu, Patrick Kilcullen, Youmin Wang, Brandon Helfield, Jinyang Liang, "Ultrahigh-speed schlieren photography via diffraction-gated real-time mapping," Adv. Imaging 2, 015001 (2025)
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