Interferometric Detection Technique Based on Optical Coherence and Weak Signal Detection

Lei, 董磊 Dong; Wang, Bin; Xin-yue, 刘欣悦 Liu

doi:10.3788/aos201737.0212001

Cited by 3 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Studies have shown that natural environments display distinct variations in energy levels based on different polarization states, spectra, and coherence characteristics between the sky background and objects within the scene [20,21]. This research presents a new method for predicting atmospheric light intensity by utilizing gradient data obtained from polarization images of natural scenes.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric Light Estimation Using Polarization Degree Gradient for Image Dehazing

Liu,

Li,

Zhao

et al. 2024

Sensors

View full text Add to dashboard Cite

A number of image dehazing techniques depend on the estimation of atmospheric light intensity. The majority of dehazing algorithms do not incorporate a physical model to estimate atmospheric light, leading to reduced accuracy and significantly impacting the effectiveness of dehazing. This article presents a novel approach for estimating atmospheric light using the polarization state and polarization degree gradient of the sky. We utilize this approach to enhance the outcomes of image dehazing by applying it to pre-existing dehazing algorithms. Our study and development of a real-time dehazing system has shown that the approach we propose has a clear advantage over previous methods for estimating ambient light. After incorporating the proposed approach into existing defogging methods, a significant improvement in the effectiveness of defogging was noted through the assessment of various criteria such as contrast, PSNR, and SSIM.

show abstract

Section: Introductionmentioning

confidence: 99%

Atmospheric Light Estimation Using Polarization Degree Gradient for Image Dehazing

Liu,

Li,

Zhao

et al. 2024

Sensors

View full text Add to dashboard Cite

show abstract

“…To avoid the above problems, the interference detection technique [ 7 , 8 , 9 , 10 ] has been proposed to improve the detection performance for finding dark stars. The interference detection technique uses the discrepancy of the far-field coherence between the target light and the skylight background to realize the separation of the two.…”

Section: Introductionmentioning

confidence: 99%

New-Type Shearing Interference Detection System Based on Double-Grating Structure for Suppressing the Skylight Background

Dong,

Wang,

et al. 2023

Sensors

View full text Add to dashboard Cite

To overcome the influence of the daytime skylight background on long-distance optical detection, a new type of shearing interference detection system was proposed to improve the detection performance of the traditional detection system for finding dark objects such as dim stars during the daytime. This article focuses on the basic principle and mathematical model as well as the simulation and experimental research of the new type of shearing interference detection system. The comparison of the detection performance between this new-type detection system and the traditional system is also carried out in this article. The experimental results show that the detection performance of the new type of shearing interference detection system is significantly better than that of the traditional system, and the image signal-to-noise ratio of this new-type system (about 13.2) is much higher than that of the best result of the traditional detection system (about 5.1).

show abstract

灵敏度增强的非重复瞬态弱信号光学感知

Lu Bing,

Fu Fangge,

Zhang Xiaoxia

et al. 2023

光学学报

View full text Add to dashboard Cite

Interferometric Detection Technique Based on Optical Coherence and Weak Signal Detection

Cited by 3 publications

References 0 publications

Atmospheric Light Estimation Using Polarization Degree Gradient for Image Dehazing

Atmospheric Light Estimation Using Polarization Degree Gradient for Image Dehazing

New-Type Shearing Interference Detection System Based on Double-Grating Structure for Suppressing the Skylight Background

灵敏度增强的非重复瞬态弱信号光学感知

Contact Info

Product

Resources

About