Inverse Triangulation with Spatiotemporal Correlation using a Variable Pseudorandom Pattern Projector for 3D Stereo Measurement |
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| Daniel Regner, João Facco, Moacir Wendhausen, Alice Bilbao, Tiago Loureiro Figaro da Costa Pinto, Armando Albertazzi G. Jr. |
- Abstract:
- In this paper, we propose an innovative 3D reconstruction approach based on stereo vision that combines inverse triangulation with a spatiotemporal correlation algorithm. The inverse triangulation technique enables the correspondence search to be performed systematically in the object space, using a structured 3D grid centered on each point of interest (X, Y, Z). These 3D points are projected onto the image planes, and subpixel-interpolated intensities are extracted from a sequence of temporal images to compute the correlation values. For each (X, Y) tuple, the Z value is determined by the correlation peak. The images capture a pseudo-random laser pattern that changes over time. The proposed approach is intended for future applications in the underwater inspection of offshore structures in the oil and gas industry.
- Download:
- IMEKO-TC2-2025-012.pdf
- DOI:
- 10.21014/tc2-2025.012
- Event details
- IMEKO TC:
- TC2
- Event name:
- IMEKO TC2 PhotoMet 2025
- Title:
2025 IMEKO TC2 International Symposium on Modern Photonic Metrology
PhotoMet 2025 - Shaping the Future of Photonic Metrology
- Place:
- Modena, ITALY
- Time:
- 01 September 2025 - 03 September 2025