Joint polarization detection and degradation mechanisms for underwater image enhancement

Cheng, Chin‐Hsiang; Fu, Qiang; Bao, Feng; XIAN-SONG, GU; Hao, Youfei; Zhu, Yudan; Zhang, Jin‐Lin; Liu, Yi; Tai, Yao-Jun; Wang, Longxiao

doi:10.1364/ao.496014

Cited by 4 publications

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Researchers have made significant contributions to the detection of underwater polarization imaging detection [1][2][3][4][5]. In recent years, rapid advancements in laser technology have drawn global attention to underwater laser target detection, with many countries conducting extensive research and experiments in this area.…”

Section: Introductionmentioning

confidence: 99%

Underwater target laser polarization suppression scattering detection technology and verification

Fu,

Dong,

Wang

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

The underwater laser polarization detection technology integrates the polarization characteristics of light into the detection and identification of underwater targets. Addressing the challenge of poor accuracy in identifying targets in strong underwater scattering environments, this article proposes an overall scheme for a laser polarization underwater detection device that suppresses scatter using polarized pulse signals. By overcoming key technological barriers in the design of polarization-preserving optical detection systems and utilizing the method of differential amplitude to measure polarization, a laser polarization underwater detection device was developed and underwater polarization detection experiments were conducted, achieving precise detection of underwater targets. The results indicate that the underwater detection device we designed has a root mean square error of less than 5.7% to detect the polarization of the target, demonstrating the accuracy and precision of the underwater detection device.

show abstract

Section: Introductionmentioning

confidence: 99%

Underwater target laser polarization suppression scattering detection technology and verification

Fu,

Dong,

Wang

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

show abstract

High‐Performance Organic Narrow Dual‐Band Circular Polarized Light Detection for Encrypted Communications and Color Imaging

Wang,

Bao,

Zhang

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

Conventional circularly polarized light (CPL) detectors necessitate several optical elements, posing difficulties in achieving miniature and integrated devices. Recently developed organic CPL detectors require no additional optical elements but usually suffer from low detectivity or low asymmetry factor (g‐factor). Here, an organic CPL detector with excellent detectivity and a high g‐factor is fabricated. By employing an inverted quasi‐planar heterojunction (IPHJ) structure and incorporating an additional liquid crystal film, we develop a CPL detector with an outstanding g‐factor of 1.62. Unfavorable charge injection is effectively suppressed by the IPHJ structure, which reduces the dark current of the organic photodetector. Consequently, a left CPL detectivity of 6.16 × 1014 Jones at 640 nm is realized, surpassing all of the latest photodiode‐type CPL detectors. Adopting a liquid crystal film with adjustable wavelengths of selectively reflected light, the hybrid device achieved narrow dual‐band CPL detection, varying from 530 nm to 640 nm, with a half‐maximum full width below 90 nm. Notably, the device achieves excellent stability of 260000 on/off cycles without attenuation. To the best of our knowledge, all these features have rarely been reported in previous work. The CPL detector arrays are also demonstrated for encrypted communications and color imaging.This article is protected by copyright. All rights reserved

show abstract

Research of the underwater polarization imaging process based on the Oren–Nayar polarization bidirectional reflection distribution function

Lang,

Zhang,

Feng

et al. 2024

J. Opt. Soc. Am. A

View full text Add to dashboard Cite

The complex water environment makes the underwater imaging process very variable. For a more intuitive understanding of the underwater imaging process, in this paper, the Monte Carlo algorithm is combined with the Oren–Nayar polarization bidirectional reflection function to establish a visualization model of underwater laser polarization imaging. The model fully considers the specular reflection and diffuse reflection effects of the target surface. The Oren–Nayar model compensates for the deficiencies of the Lambert model in describing the diffuse reflection of target surfaces. The method is applied to analyze the effect of diffuse reflection on the laser polarization characteristics. The imaging process of high-polarized underwater targets and low-polarized underwater targets is simulated, and the effect of suspended particles on underwater optical transmission characteristics and underwater imaging is analyzed. The variation of backscattering light and system polarization characteristics with medium concentration is investigated in the simulation and experiment, respectively. The results show that the simulated images and experimental images have the same characteristics and change rules, indicating that the model can simulate the process of underwater polarization imaging correctly.

show abstract

Joint polarization detection and degradation mechanisms for underwater image enhancement

Cited by 4 publications

References 18 publications

Underwater target laser polarization suppression scattering detection technology and verification

Underwater target laser polarization suppression scattering detection technology and verification

High‐Performance Organic Narrow Dual‐Band Circular Polarized Light Detection for Encrypted Communications and Color Imaging

Research of the underwater polarization imaging process based on the Oren–Nayar polarization bidirectional reflection distribution function

Contact Info

Product

Resources

About