Time-of-Flight Imaging in Fog Using Polarization Phasor Imaging
Due to the light scattered by atmospheric aerosols, the amplitude image contrast is degraded and the depth measurement is greatly distorted for time-of-flight (ToF) imaging in fog. The problem limits ToF imaging to be applied in outdoor settings, such as autonomous driving. To improve the quality of...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/9/3159 |
| _version_ | 1797502913171423232 |
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| author | Yixin Zhang Xia Wang Yuwei Zhao Yujie Fang |
| author_facet | Yixin Zhang Xia Wang Yuwei Zhao Yujie Fang |
| author_sort | Yixin Zhang |
| collection | DOAJ |
| description | Due to the light scattered by atmospheric aerosols, the amplitude image contrast is degraded and the depth measurement is greatly distorted for time-of-flight (ToF) imaging in fog. The problem limits ToF imaging to be applied in outdoor settings, such as autonomous driving. To improve the quality of the images captured by ToF cameras, we propose a polarization phasor imaging method for image recovery in foggy scenes. In this paper, optical polarimetric defogging is introduced into ToF phasor imaging, and the degree of polarization phasor is proposed to estimate the scattering component. A polarization phasor imaging model is established, aiming at separating the target component from the signal received by ToF cameras to recover the amplitude and depth information. The effectiveness of this method is confirmed by several experiments with artificial fog, and the experimental results demonstrate that the proposed method significantly improves the image quality, with robustness in different thicknesses of fog. |
| first_indexed | 2024-03-10T03:42:57Z |
| format | Article |
| id | doaj.art-604564d78f8541b982914eb0723b56a5 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T03:42:57Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-604564d78f8541b982914eb0723b56a52023-11-23T09:14:19ZengMDPI AGSensors1424-82202022-04-01229315910.3390/s22093159Time-of-Flight Imaging in Fog Using Polarization Phasor ImagingYixin Zhang0Xia Wang1Yuwei Zhao2Yujie Fang3Key Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, ChinaKey Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, ChinaKey Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, ChinaKey Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, ChinaDue to the light scattered by atmospheric aerosols, the amplitude image contrast is degraded and the depth measurement is greatly distorted for time-of-flight (ToF) imaging in fog. The problem limits ToF imaging to be applied in outdoor settings, such as autonomous driving. To improve the quality of the images captured by ToF cameras, we propose a polarization phasor imaging method for image recovery in foggy scenes. In this paper, optical polarimetric defogging is introduced into ToF phasor imaging, and the degree of polarization phasor is proposed to estimate the scattering component. A polarization phasor imaging model is established, aiming at separating the target component from the signal received by ToF cameras to recover the amplitude and depth information. The effectiveness of this method is confirmed by several experiments with artificial fog, and the experimental results demonstrate that the proposed method significantly improves the image quality, with robustness in different thicknesses of fog.https://www.mdpi.com/1424-8220/22/9/3159time-of-flight camerapolarization defoggingphasor imagingmultipath interferenceimage recovery |
| spellingShingle | Yixin Zhang Xia Wang Yuwei Zhao Yujie Fang Time-of-Flight Imaging in Fog Using Polarization Phasor Imaging Sensors time-of-flight camera polarization defogging phasor imaging multipath interference image recovery |
| title | Time-of-Flight Imaging in Fog Using Polarization Phasor Imaging |
| title_full | Time-of-Flight Imaging in Fog Using Polarization Phasor Imaging |
| title_fullStr | Time-of-Flight Imaging in Fog Using Polarization Phasor Imaging |
| title_full_unstemmed | Time-of-Flight Imaging in Fog Using Polarization Phasor Imaging |
| title_short | Time-of-Flight Imaging in Fog Using Polarization Phasor Imaging |
| title_sort | time of flight imaging in fog using polarization phasor imaging |
| topic | time-of-flight camera polarization defogging phasor imaging multipath interference image recovery |
| url | https://www.mdpi.com/1424-8220/22/9/3159 |
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