Investigation of chromatic aberration and its influence on the processing of underwater imagery
The number of researchers utilising imagery for the 3D reconstruction of underwater natural (e.g., reefs) and man-made structures (e.g., shipwrecks) is increasing. Often, the same procedures and software solutions are used for processing the images as in-air without considering additional aberration...
| Main Authors: | , |
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| Format: | Journal Article |
| Language: | English |
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MDPI
2020
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| Online Access: | http://purl.org/au-research/grants/arc/LP180100284 http://hdl.handle.net/20.500.11937/83268 |
| _version_ | 1848764572756869120 |
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| author | Helmholz, Petra Lichti, D.D. |
| author_facet | Helmholz, Petra Lichti, D.D. |
| author_sort | Helmholz, Petra |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The number of researchers utilising imagery for the 3D reconstruction of underwater natural (e.g., reefs) and man-made structures (e.g., shipwrecks) is increasing. Often, the same procedures and software solutions are used for processing the images as in-air without considering additional aberrations that can be caused by the change of the medium from air to water. For instance, several publications mention the presence of chromatic aberration (CA). The aim of this paper is to investigate CA effects in low-cost camera systems (several GoPro cameras) operated in an underwater environment. We found that underwater and in-air distortion profiles differed by more than 1000 times in terms of maximum displacement and in terms of curvature. Moreover, significant CA effects were found in the underwater profiles that did not exist in-air. Furthermore, the paper investigates the effect of adjustment constraints imposed on the underwater self-calibration and the reliability of the interior orientation parameters. The analysis of the precision shows that in-air RMS values are just due to random errors. In contrast, the underwater calibration RMS values are 3x-6x higher than the exterior orientation parameter (EOP) precision, so these values contain both random error and the systematic effects from the CA. The accuracy assessment shows significant differences. |
| first_indexed | 2025-11-14T11:21:30Z |
| format | Journal Article |
| id | curtin-20.500.11937-83268 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:21:30Z |
| publishDate | 2020 |
| publisher | MDPI |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-832682021-05-10T04:28:42Z Investigation of chromatic aberration and its influence on the processing of underwater imagery Helmholz, Petra Lichti, D.D. Science & Technology Life Sciences & Biomedicine Physical Sciences Technology Environmental Sciences Geosciences, Multidisciplinary Remote Sensing Imaging Science & Photographic Technology Environmental Sciences & Ecology Geology chromatic aberration camera calibration underwater in-air comparison adjustment constraint precision accuracy CAMERA CALIBRATION QUALITY The number of researchers utilising imagery for the 3D reconstruction of underwater natural (e.g., reefs) and man-made structures (e.g., shipwrecks) is increasing. Often, the same procedures and software solutions are used for processing the images as in-air without considering additional aberrations that can be caused by the change of the medium from air to water. For instance, several publications mention the presence of chromatic aberration (CA). The aim of this paper is to investigate CA effects in low-cost camera systems (several GoPro cameras) operated in an underwater environment. We found that underwater and in-air distortion profiles differed by more than 1000 times in terms of maximum displacement and in terms of curvature. Moreover, significant CA effects were found in the underwater profiles that did not exist in-air. Furthermore, the paper investigates the effect of adjustment constraints imposed on the underwater self-calibration and the reliability of the interior orientation parameters. The analysis of the precision shows that in-air RMS values are just due to random errors. In contrast, the underwater calibration RMS values are 3x-6x higher than the exterior orientation parameter (EOP) precision, so these values contain both random error and the systematic effects from the CA. The accuracy assessment shows significant differences. 2020 Journal Article http://hdl.handle.net/20.500.11937/83268 10.3390/RS12183002 English http://purl.org/au-research/grants/arc/LP180100284 http://creativecommons.org/licenses/by/4.0/ MDPI fulltext |
| spellingShingle | Science & Technology Life Sciences & Biomedicine Physical Sciences Technology Environmental Sciences Geosciences, Multidisciplinary Remote Sensing Imaging Science & Photographic Technology Environmental Sciences & Ecology Geology chromatic aberration camera calibration underwater in-air comparison adjustment constraint precision accuracy CAMERA CALIBRATION QUALITY Helmholz, Petra Lichti, D.D. Investigation of chromatic aberration and its influence on the processing of underwater imagery |
| title | Investigation of chromatic aberration and its influence on the processing of underwater imagery |
| title_full | Investigation of chromatic aberration and its influence on the processing of underwater imagery |
| title_fullStr | Investigation of chromatic aberration and its influence on the processing of underwater imagery |
| title_full_unstemmed | Investigation of chromatic aberration and its influence on the processing of underwater imagery |
| title_short | Investigation of chromatic aberration and its influence on the processing of underwater imagery |
| title_sort | investigation of chromatic aberration and its influence on the processing of underwater imagery |
| topic | Science & Technology Life Sciences & Biomedicine Physical Sciences Technology Environmental Sciences Geosciences, Multidisciplinary Remote Sensing Imaging Science & Photographic Technology Environmental Sciences & Ecology Geology chromatic aberration camera calibration underwater in-air comparison adjustment constraint precision accuracy CAMERA CALIBRATION QUALITY |
| url | http://purl.org/au-research/grants/arc/LP180100284 http://hdl.handle.net/20.500.11937/83268 |