An underwater image restoration based on global polarization effects of underwater scene

IF 3.5 2区工程技术 Q2 OPTICS

Optics and Lasers in Engineering Pub Date : 2023-06-01 DOI:10.1016/j.optlaseng.2023.107550

Yafeng Li , Rui Ruan , Zetian Mi , Xin Shen , Tianzhu Gao , Xianping Fu

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引用次数: 4

Abstract

Currently, most underwater polarization imaging methods assume that the backscattering is polarized and the reflected light of the target is unpolarized. In reality, this assumption is unreliable since both backscattering and reflected light contribute to polarization. Therefore, we propose an underwater image restoration method that combines the polarization effects of reflected light and backscattering. Firstly, Stokes vectors are used to automatically obtain polarization difference images. Based on the enhancement measure evaluation (EME) constraint, the initial estimate of backscattering is obtained. Then, an adaptive local optimization (ALO) method is designed to estimate global backscattering light. A variable factor is introduced for local optimization to obtain global backscattering. Finally, in order to optimize the system, particle swarm optimization (PSO) is introduced, which improves the processing speed of the system. The experimental results show that it is necessary to consider the polarization of the target during underwater polarization descattering, which not only has a good ability to eliminate scattering but also has an excellent effect on restoring target details.

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基于全局偏振效应的水下场景图像恢复

目前，大多数水下偏振成像方法都假设目标的后向散射是偏振的，目标的反射光是非偏振的。实际上，这种假设是不可靠的，因为后向散射和反射光都会导致偏振。因此，我们提出了一种结合反射光和后向散射偏振效应的水下图像恢复方法。首先，利用Stokes矢量自动获取偏振差图像;基于增强措施评价(EME)约束，得到了后向散射的初始估计。然后，设计了一种自适应局部优化(ALO)方法来估计全局后向散射光。引入可变因子进行局部优化，得到全局后向散射。最后，为了对系统进行优化，引入粒子群算法(PSO)，提高了系统的处理速度。实验结果表明，水下偏振散射时需要考虑目标的偏振，不仅具有较好的消散射能力，而且对恢复目标细节也有很好的效果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics and Lasers in Engineering 工程技术-光学

CiteScore

8.90

自引率

8.70%

发文量

384

审稿时长

42 days

期刊介绍： Optics and Lasers in Engineering aims at providing an international forum for the interchange of information on the development of optical techniques and laser technology in engineering. Emphasis is placed on contributions targeted at the practical use of methods and devices, the development and enhancement of solutions and new theoretical concepts for experimental methods. Optics and Lasers in Engineering reflects the main areas in which optical methods are being used and developed for an engineering environment. Manuscripts should offer clear evidence of novelty and significance. Papers focusing on parameter optimization or computational issues are not suitable. Similarly, papers focussed on an application rather than the optical method fall outside the journal''s scope. The scope of the journal is defined to include the following: -Optical Metrology- Optical Methods for 3D visualization and virtual engineering- Optical Techniques for Microsystems- Imaging, Microscopy and Adaptive Optics- Computational Imaging- Laser methods in manufacturing- Integrated optical and photonic sensors- Optics and Photonics in Life Science- Hyperspectral and spectroscopic methods- Infrared and Terahertz techniques