New algorithm on phase-shifting interferometry: the overlapping averaging 4-frame algorithm

Zhu, Rihong; Chen, Jinbang; Wang, Qingyun; Chen, Lei; Zhang, Yiguang

doi:10.1117/12.165470

Cited by 5 publications

(1 citation statement)

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“…The principle of 3D imaging based on structured light illumination is to calculate the depth information by observing the deformation caused by the uneven surface of the object. The structured light is generated by a phase-shifting method [ 5 , 13 , 14 ]. With the relative positions between the camera and projector, the depth information of the 3D object is calculated by the phase-shift of the structured light [ 15 , 16 , 17 , 18 ].…”

Section: Methodsmentioning

confidence: 99%

Three-Dimensional Microscopic Image Reconstruction Based on Structured Light Illumination

Shi

Yang

Zhu

et al. 2021

Sensors

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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.

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