ArticleSensors (Basel, Switzerland)2020
Single-Shot Structured Light Sensor for 3D Dense and Dynamic Reconstruction.
Article in Sensors (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Time-Distributed Framework for 3D Reconstruction Integrating Fringe Projection with Deep Learning.Sensors (Basel, Switzerland) · 2023Article
- High-Capacity Spatial Structured Light for Robust and Accurate Reconstruction.Sensors (Basel, Switzerland) · 2023Article
- A Comparison and Evaluation of Stereo Matching on Active Stereo Images.Sensors (Basel, Switzerland) · 2022Article
- Scale-Aware Multi-View Reconstruction Using an Active Triple-Camera System.Sensors (Basel, Switzerland) · 2020Article
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Authors and funding
3 authors.
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Abstract
Structured light (SL) has a trade-off between acquisition time and spatial resolution. Temporally coded SL can produce a 3D reconstruction with high density, yet it is not applicable to dynamic reconstruction. On the contrary, spatially coded SL works with a single shot, but it can only achieve sparse reconstruction. This paper aims to achieve accurate 3D dense and dynamic reconstruction at the same time. A speckle-based SL sensor is presented, which consists of two cameras and a diffractive optical element (DOE) projector. The two cameras record images synchronously. First, a speckle pattern was elaborately designed and projected. Second, a high-accuracy calibration method was proposed to calibrate the system; meanwhile, the stereo images were accurately aligned by developing an optimized epipolar rectification algorithm. Then, an improved semi-global matching (SGM) algorithm was proposed to improve the correctness of the stereo matching, through which a high-quality depth map was achieved. Finally, dense point clouds could be recovered from the depth map. The DOE projector was designed with a size of 8 mm × 8 mm. The baseline between stereo cameras was controlled to be below 50 mm. Experimental results validated the effectiveness of the proposed algorithm. Compared with some other single-shot 3D systems, our system displayed a better performance. At close range, such as 0.4 m, our system could achieve submillimeter accuracy.
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