Stray Light Correction Algorithm for High Performance Optical Instruments: The Case of Metop-3MI
Stray light is a critical aspect for high performance optical instruments. When stray light control by design is insufficient to reach the performance requirement, correction by post-processing must be considered. This situation is encountered, for example, in the case of the Earth observation instr...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/14/6/1354 |
| _version_ | 1797442777079873536 |
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| author | Lionel Clermont Céline Michel Yvan Stockman |
| author_facet | Lionel Clermont Céline Michel Yvan Stockman |
| author_sort | Lionel Clermont |
| collection | DOAJ |
| description | Stray light is a critical aspect for high performance optical instruments. When stray light control by design is insufficient to reach the performance requirement, correction by post-processing must be considered. This situation is encountered, for example, in the case of the Earth observation instrument 3MI, whose stray light properties are complex due to the presence of many ghosts distributed on the detector array. We implement an iterative correction method and discuss its convergence properties. Spatial and field binning can be employed to reduce the computation time but at the cost of a decreased performance. Interpolation of the stray light properties is required to achieve high performance correction. For that, two methods are proposed and tested. The first interpolate the stray light in the field domain while the second applies a scaling operation based on a local symmetry assumption. Ultimately, the scaling method is selected and a stray light reduction by a factor of 58 is obtained at 2σ (129 at 1σ) for an extended scene illumination. |
| first_indexed | 2024-03-09T12:47:00Z |
| format | Article |
| id | doaj.art-7db57b546ef3458d929ad0cfca0e28cd |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T12:47:00Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-7db57b546ef3458d929ad0cfca0e28cd2023-11-30T22:11:33ZengMDPI AGRemote Sensing2072-42922022-03-01146135410.3390/rs14061354Stray Light Correction Algorithm for High Performance Optical Instruments: The Case of Metop-3MILionel Clermont0Céline Michel1Yvan Stockman2Centre Spatial de Liège, STAR Institute, Université de Lège, 4031 Liège, BelgiumCentre Spatial de Liège, STAR Institute, Université de Lège, 4031 Liège, BelgiumCentre Spatial de Liège, STAR Institute, Université de Lège, 4031 Liège, BelgiumStray light is a critical aspect for high performance optical instruments. When stray light control by design is insufficient to reach the performance requirement, correction by post-processing must be considered. This situation is encountered, for example, in the case of the Earth observation instrument 3MI, whose stray light properties are complex due to the presence of many ghosts distributed on the detector array. We implement an iterative correction method and discuss its convergence properties. Spatial and field binning can be employed to reduce the computation time but at the cost of a decreased performance. Interpolation of the stray light properties is required to achieve high performance correction. For that, two methods are proposed and tested. The first interpolate the stray light in the field domain while the second applies a scaling operation based on a local symmetry assumption. Ultimately, the scaling method is selected and a stray light reduction by a factor of 58 is obtained at 2σ (129 at 1σ) for an extended scene illumination.https://www.mdpi.com/2072-4292/14/6/1354stray lightradiometric accuracyEarth observationcorrection algorithmghost reflections |
| spellingShingle | Lionel Clermont Céline Michel Yvan Stockman Stray Light Correction Algorithm for High Performance Optical Instruments: The Case of Metop-3MI Remote Sensing stray light radiometric accuracy Earth observation correction algorithm ghost reflections |
| title | Stray Light Correction Algorithm for High Performance Optical Instruments: The Case of Metop-3MI |
| title_full | Stray Light Correction Algorithm for High Performance Optical Instruments: The Case of Metop-3MI |
| title_fullStr | Stray Light Correction Algorithm for High Performance Optical Instruments: The Case of Metop-3MI |
| title_full_unstemmed | Stray Light Correction Algorithm for High Performance Optical Instruments: The Case of Metop-3MI |
| title_short | Stray Light Correction Algorithm for High Performance Optical Instruments: The Case of Metop-3MI |
| title_sort | stray light correction algorithm for high performance optical instruments the case of metop 3mi |
| topic | stray light radiometric accuracy Earth observation correction algorithm ghost reflections |
| url | https://www.mdpi.com/2072-4292/14/6/1354 |
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