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Frequency shift triangulation: a robust fringe projection technique for 3D shape acquisition in the presence of strong interreflections

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1109/3DV.2019.00030
AuthorSearch for: 1; Search for: 1; Search for: 1; Search for: 1; Search for: 2; Search for: 3
Affiliation
  1. National Research Council of Canada. Digital Technologies
  2. National Research Council of Canada. Aerospace
  3. National Research Council of Canada. Energy, Mining and Environment
FormatText, Article
Conference2019 International Conference on 3D Vision (3DV), September 16-19, 2019, Québec City, QC, Canada
Subject3D shape measurement; interreflections; frequency shift triangulation; direct illumination; indirect illumination
Abstract
We present the Frequency Shift Method, a new structured light technique allowing 3D shape acquisition in the presence of strong interreflections. The intensity signal of each camera pixel is represented by one or several peaks in the Fourier domain. If there is no interreflection, only a single peak appears, otherwise several peaks are present. Each peak represents a projector pixel participating in the illumination of the surface point imaged at the camera pixel. In the baseline version of the proposed approach, the number of patterns required is proportional to the number of projector pixels. We also propose a modification that significantly reduces the required number of patterns by subdividing and encoding the projector into multiple virtual low-resolution projectors. A method based on dynamic programming is used to separate direct and indirect illuminations. Our experimental results illustrate the effectiveness of our method compared to existing ones.
Publication date
PublisherIEEE
In
LanguageEnglish
Peer reviewedYes
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Record identifierce5011e3-df9c-42e5-b979-64d4349a9940
Record created2021-03-12
Record modified2021-03-12
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