Inverse Triangulation with Spatiotemporal Correlation using a Variable Pseudorandom Pattern Projector for 3D Stereo Measurement

• 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:

  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:

  1 September 2025 - 3 September 2025