In this paper, we propose and experimentally demonstrate a three-dimensional (3D) microscopic system that reconstructs a 3D image based on structured light illumination. The spatial pattern of the structured light changes according to the profile of the object, and by measuring the change, a 3D image of the object is reconstructed. The structured light is generated with a digital micro-mirror device (DMD), which controls the structured light pattern to change in a kHz rate and enables the system to record the 3D information in real time. The working distance of the imaging system is 9 cm at a resolution of 20 μm. The resolution, working distance, and real-time 3D imaging enable the system to be applied in bridge and road crack examinations, and structure fault detection of transportation infrastructures.
Shi, Taichu, Yang Qi, Cheng Zhu, Ying Tang, and Ben Wu. 2021. "Three-Dimensional Microscopic Image Reconstruction Based on Structured Light Illumination" Sensors 21, no. 18: 6097. https://doi.org/10.3390/s21186097
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