Underwater Imaging by Suppressing the Backscattered Light Based on Mueller Matrix

Polarimetric imaging is an effective way for enhancing the image quality in underwater environments. Previous polarization-based methods for underwater imaging actually involve both optical and digital processing, while compared with digital processing, the importance of the optical method is not cl...

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Bibliographic Details
Published in:IEEE photonics journal 2021-08, Vol.13 (4), p.1-6
Main Authors: Wang, Hongyuan, Li, Jiaqi, Hu, Haofeng, Jiang, Junfeng, Li, Xiaobo, Zhao, Kan, Cheng, Zhenzhou, Sang, Mei, Liu, Tiegen
Format: Article
Language:English
Subjects:
Backscattering
Cameras
Dairy products
Digital imaging
Image enhancement
Image quality
Light
Lighting
Mueller matrix
Optical filters
Optical scattering
Optimized production technology
Polarimetric imaging
Polarimetry
Polarization
Scattering
scattering media
Underwater
underwater imaging
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Summary:Polarimetric imaging is an effective way for enhancing the image quality in underwater environments. Previous polarization-based methods for underwater imaging actually involve both optical and digital processing, while compared with digital processing, the importance of the optical method is not clear. In this paper, we propose a polarimetric method for underwater imaging based on the Mueller imager. In this method, in order to optimally filter out the backscattered light and enhance the image quality, the polarization states of illumination light together with the polarization filter in front of the camera are synergistically modulated in an optical way. In other words, the quality of images captured by the camera can be directly improved without any digital processing. A series of experimental results show the effectiveness of the proposed method, which indeed verifies its superiority in scattering media.
ISSN:1943-0655
1943-0655
1943-0647
DOI:10.1109/JPHOT.2021.3094359