An Improved Vicarious Calibration Method Based on Multi-Grayscale Targets Article Swipe
Shiwei Bao
,
Hongyao Chen
,
Yan Li
,
Liming Zhang
,
Wenxin Huang
,
Xiaolong Si
,
Xianhua Wang
,
Zhou Fang
,
Yuanwei Chen
,
Xinrong Wang
,
Xiaowen Zhao
·
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.3390/rs14153779
YOU?
·
· 2022
· Open Access
·
· DOI: https://doi.org/10.3390/rs14153779
Vicarious calibration is a well-developed method for electro-optical (EO) sensor calibration that has been used since the early 1980s. The radiometric calibration of reflectance solar band is mainly applied to reflection inversion. In this paper, a radiometric calibration-reflectance inversion (RCRII) model is proposed as an improved vicarious calibration method. Taking the reflectance of grayscale targets with constant spectrum, suitable uniformity, and near-Lambertian characteristics as the known information, the grayscale target calibration is realized, and the initial value of calibration coefficient and offset are calculated. Then, the adjacency effect is evaluated and corrected by reflectance inversion, and the results are fed back to the calibration process to realize the iterative process of calibration inversion rescaling. The results indicate that the absolute difference between the reflectance calculated with the RCRII model and measured reflectance is less than 0.01. By comparing with Sentinel-2A images, it is cross-verified that the difference of radiance between them is within 4%, and the absolute reflectance difference is less than 0.01, in the range of 0.1~0.3 reflectance.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3390/rs14153779
- https://www.mdpi.com/2072-4292/14/15/3779/pdf?version=1660007928
- OA Status
- gold
- Cited By
- 1
- References
- 18
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4292451731
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Raw OpenAlex JSON
- OpenAlex ID
-
https://openalex.org/W4292451731Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.3390/rs14153779Digital Object Identifier
- Title
-
An Improved Vicarious Calibration Method Based on Multi-Grayscale TargetsWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2022Year of publication
- Publication date
-
2022-08-06Full publication date if available
- Authors
-
Shiwei Bao, Hongyao Chen, Yan Li, Liming Zhang, Wenxin Huang, Xiaolong Si, Xianhua Wang, Zhou Fang, Yuanwei Chen, Xinrong Wang, Xiaowen ZhaoList of authors in order
- Landing page
-
https://doi.org/10.3390/rs14153779Publisher landing page
- PDF URL
-
https://www.mdpi.com/2072-4292/14/15/3779/pdf?version=1660007928Direct link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://www.mdpi.com/2072-4292/14/15/3779/pdf?version=1660007928Direct OA link when available
- Concepts
-
Radiance, Remote sensing, Calibration, Grayscale, Reflectivity, Optics, Radiometric calibration, Inversion (geology), Geology, Mathematics, Physics, Statistics, Structural basin, Paleontology, PixelTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
1Total citation count in OpenAlex
- Citations by year (recent)
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2025: 1Per-year citation counts (last 5 years)
- References (count)
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18Number of works referenced by this work
- Related works (count)
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10Other works algorithmically related by OpenAlex
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