Underwater Turbid Media Stokes-Based Polarimetric Recovery

• Published in: Sensors (Basel, Switzerland) Vol. 24; no. 5; p. 1367
• Main Authors: Wang, Zhenfei, Hu, Meixin, Zhang, Ketao
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 20.02.2024; MDPI
• Subjects: Algorithms; Image processing; Light; Methods; optical measurements; optical sensors; polarimetric imaging; polarization; Sensors; turbid media; underwater imaging; turbid media; polarimetric imaging; polarization; optical sensors; optical measurements; underwater imaging
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s24051367

Underwater optical imaging for information acquisition has always been an innovative and crucial research direction. Unlike imaging in the air medium, the underwater optical environment is more intricate. From an optical perspective, natural factors such as turbulence and suspended particles in the water cause issues like light scattering and attenuation, leading to color distortion, loss of details, decreased contrast, and overall blurriness. These challenges significantly impact the acquisition of underwater image information, rendering subsequent algorithms reliant on such data unable to function properly. Therefore, this paper proposes a method for underwater image restoration using Stokes linearly polarized light, specifically tailored to the challenges of underwater complex optical imaging environments. This method effectively utilizes linear polarization information and designs a system that uses the information of the first few frames to calculate the enhanced images of the later frames. By doing so, it achieves real-time underwater Stokes linear polarized imaging while minimizing human interference during the imaging process. Furthermore, the paper provides a comprehensive analysis of the deficiencies observed during the testing of the method and proposes improvement perspectives, along with offering insights into potential future research directions.