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Metasurface-Driven Adaptive Structured Light: Achieving Integrated Real-Time 3D Reconstruction and Forward Ranging in
Zhengren Zhang1, Mengran Yang1, Anjun Qu1
1School of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing, 400074, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|July 14, 2025
Summary
This study introduces a novel metasurface-based system for simultaneous normal and grazing emission beams in 3D reconstruction. This innovation overcomes hardware limitations and enables real-time 3D imaging for diverse applications like tunnel engineering.
Area of Science:
- Optics and Photonics
- 3D Reconstruction Technology
- Metasurface Applications
Background:
- Structured light technology utilizes normal and grazing emission beams for 3D reconstruction.
- Current systems face challenges with complex assembly, miniaturization, and simultaneous dual-mode beam generation.
Purpose of the Study:
- To develop a system capable of simultaneously generating normal and grazing emission dual-mode beams using metasurfaces.
- To overcome the limitations of traditional structured light systems.
Main Methods:
- Exploited metasurfaces for light wave modulation to achieve simultaneous dual-mode beam generation.
- Developed an adaptive closed-line structured light with a central bright spot within 2π space.
- Integrated a multimodal point cloud enhancement algorithm for 3D reconstruction and ranging.
Main Results:
- Successfully generated simultaneous normal and grazing emission dual-mode beams.
- Developed a real-time 3D reconstruction and forward ranging system operating at 30 fps without extra ranging modules.
- Demonstrated adaptability to diverse scenarios, including tunnel engineering.
Conclusions:
- The metasurface-based approach transforms hardware architecture and surpasses light emission angle limits.
- The system overcomes application constraints of traditional methods, offering innovative solutions for digital construction.
- This technology enhances 3D reconstruction and ranging capabilities for complex environments.
