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Updated: May 14, 2026

Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging
Published on: April 18, 2025
Exploring underwater target detection by imaging polarimetry and correlation techniques
M Dubreuil1, P Delrot, I Leonard
1Vision-L@BISEN, Institut Supérieur de l’Electronique et du Numérique Brest, Brest, France.
Abstract:
Underwater target detection is investigated by combining active polarization imaging and optical correlation-based approaches. Experiments were conducted in a glass tank filled with tap water with diluted milk or seawater and containing targets of arbitrary polarimetric responses. We found that target estimation obtained by imaging with two orthogonal polarization states always improves detection performances when correlation is used as detection criterion. This experimental study illustrates the potential of polarization imaging for underwater target detection and opens interesting perspectives for the development of underwater imaging systems.
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