ArticleNanophotonics (Berlin, Germany)2025
Baseline-free structured light 3D imaging using a metasurface double-helix dot projector.
Article in Nanophotonics (Berlin, Germany), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed.
- A Modified Dot-Pattern Moiré Fringe Topography Technique for Efficient Human Body Surface Analysis.Sensors (Basel, Switzerland) · 2026Article
- Special issue: "Metamaterials and Plasmonics in Asia".Nanophotonics (Berlin, Germany) · 2025Article
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3 authors.
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Abstract
Structured light is a widely used 3D imaging method with a drawback that it typically requires a long baseline length between the laser projector and the camera sensor, which hinders its utilization in space-constrained scenarios. On the other hand, the application of passive 3D imaging methods, such as depth from depth-dependent point spread functions (PSFs), is impeded by the challenge in measuring textureless scenes. Here, we combine the advantages of both structured light and depth-dependent PSFs and propose a baseline-free structured light 3D imaging system. A metasurface is designed to project a structured dot array and encode depth information in the double-helix pattern of each dot simultaneously. Combined with a straightforward and fast algorithm, we demonstrate accurate 3D point cloud acquisition for various real-world scenarios including multiple cardboard boxes and a living human face. Such a technique may find application in a broad range of areas including consumer electronics and precision metrology.
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