Underwater Dynamic Polarization-Difference Imaging with Greater Applicability
Jinxin Deng,
Jingping Zhu,
Haoxiang Li,
Yucai Kuang,
Angze Li,
Xiaofang Liu
Affiliations
Jinxin Deng
Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Laboratory of Information Photonic Technique, Xi’an Jiaotong University, Xi’an 710049, China
Jingping Zhu
Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Laboratory of Information Photonic Technique, Xi’an Jiaotong University, Xi’an 710049, China
Haoxiang Li
China Academy of Space Technology (Xi’an), Xi’an 710100, China
Yucai Kuang
Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Laboratory of Information Photonic Technique, Xi’an Jiaotong University, Xi’an 710049, China
Angze Li
Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Laboratory of Information Photonic Technique, Xi’an Jiaotong University, Xi’an 710049, China
Xiaofang Liu
Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Shaanxi Key Laboratory of Information Photonic Technique, Xi’an Jiaotong University, Xi’an 710049, China
Available polarization-difference imaging techniques face serious challenges in imaging speed and application range. To address these issues, this paper proposes an underwater dynamic polarization-difference imaging method with greater applicability. First, the intensity distribution of backscattered light is estimated via the Stokes vector. Afterward, the differential operation between the total intensity of light and the amplified estimation result of backscattered light makes clear imaging immediately accessible. Regardless of the movement states and polarization characteristics of the target, experimental results consistently demonstrate that the backscattered light can be eliminated to a great extent, and imaging quality and applicability are significantly enhanced. Meanwhile, the proposed method is immune to unexpected factors such as uneven illumination and has good stability. More importantly, there are also apparent advantages in terms of imaging time.
