Development and Deployment of THEIA: A Compact Underwater Multispectral Imaging System
We present THEIA, a novel underwater 3D multispectral imaging system. THEIA integrates a 4MP multispectral field array camera and a high-resolution RGB stereo camera pair in a specially built underwater housing to simultaneously capture spectral and depth information. This enables detailed spectral...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2025-07-01
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| Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | https://isprs-archives.copernicus.org/articles/XLVIII-2-W10-2025/287/2025/isprs-archives-XLVIII-2-W10-2025-287-2025.pdf |
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| Summary: | We present THEIA, a novel underwater 3D multispectral imaging system. THEIA integrates a 4MP multispectral field array camera and a high-resolution RGB stereo camera pair in a specially built underwater housing to simultaneously capture spectral and depth information. This enables detailed spectral mapping and 3D reconstructions of underwater scenes. High resolution multispectral images are obtained via a Deep Image Prior-based demosaicing algorithm that enhances the multispectral data resolution without relying on external training. Stereo imaging provides depth cues for performing radiance correction. By suitably adapting Gaussian Splat-based 3D reconstruction methods, THEIA generates high-fidelity multispectral 3D models. Successful field trials at the Kolumbo underwater volcano validate the system’s reliability and potential for applications in marine science and beyond. |
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| ISSN: | 1682-1750 2194-9034 |