Smartphone Bi-Camera System for Backwards Photometric Correction of a 3D Gaussian Splatted Render
Multi-camera systems are essential for multi-view stereo, enabling accurate depth estimation and 3D reconstruction through parallax. However, traditional bi-camera setups, typically forward-facing, are limited in capturing diverse environmental perspectives, particularly in autonomous driving, where...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2025-08-01
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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-G-2025/1677/2025/isprs-archives-XLVIII-G-2025-1677-2025.pdf |
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| _version_ | 1849409730905112576 |
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| author | R. J. Zambra H. Yang |
| author_facet | R. J. Zambra H. Yang |
| author_sort | R. J. Zambra |
| collection | DOAJ |
| description | Multi-camera systems are essential for multi-view stereo, enabling accurate depth estimation and 3D reconstruction through parallax. However, traditional bi-camera setups, typically forward-facing, are limited in capturing diverse environmental perspectives, particularly in autonomous driving, where vehicle motion is restricted. To overcome these limitations, we propose a novel no-parallax bi-camera system that combines a forward-facing and a backward-facing camera on a smartphone setup. This configuration simulates 360° spatial coverage and enhances 3D reconstruction by photometrically correcting forward-facing Gaussian-splatted renders using the backward-facing camera in a loosely-coupled manner, rather than relying on multi-view images in a conventional bundle adjustment. Our results show that incorporating a backward-facing image significantly improves the quality of backward renders, effectively reducing artifacts and mitigating overfitting seen in forward-facing-only images, resulting in a more accurate and refined 3D representation of the environment. |
| format | Article |
| id | doaj-art-122050fe8c28437b8bd3b9101a05c19f |
| institution | Kabale University |
| issn | 1682-1750 2194-9034 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| spelling | doaj-art-122050fe8c28437b8bd3b9101a05c19f2025-08-20T03:35:24ZengCopernicus PublicationsThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences1682-17502194-90342025-08-01XLVIII-G-20251677168310.5194/isprs-archives-XLVIII-G-2025-1677-2025Smartphone Bi-Camera System for Backwards Photometric Correction of a 3D Gaussian Splatted RenderR. J. Zambra0H. Yang1Dept. of Geomatics Engineering, University of Calgary, Calgary, Alberta, CanadaDept. of Geomatics Engineering, University of Calgary, Calgary, Alberta, CanadaMulti-camera systems are essential for multi-view stereo, enabling accurate depth estimation and 3D reconstruction through parallax. However, traditional bi-camera setups, typically forward-facing, are limited in capturing diverse environmental perspectives, particularly in autonomous driving, where vehicle motion is restricted. To overcome these limitations, we propose a novel no-parallax bi-camera system that combines a forward-facing and a backward-facing camera on a smartphone setup. This configuration simulates 360° spatial coverage and enhances 3D reconstruction by photometrically correcting forward-facing Gaussian-splatted renders using the backward-facing camera in a loosely-coupled manner, rather than relying on multi-view images in a conventional bundle adjustment. Our results show that incorporating a backward-facing image significantly improves the quality of backward renders, effectively reducing artifacts and mitigating overfitting seen in forward-facing-only images, resulting in a more accurate and refined 3D representation of the environment.https://isprs-archives.copernicus.org/articles/XLVIII-G-2025/1677/2025/isprs-archives-XLVIII-G-2025-1677-2025.pdf |
| spellingShingle | R. J. Zambra H. Yang Smartphone Bi-Camera System for Backwards Photometric Correction of a 3D Gaussian Splatted Render The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| title | Smartphone Bi-Camera System for Backwards Photometric Correction of a 3D Gaussian Splatted Render |
| title_full | Smartphone Bi-Camera System for Backwards Photometric Correction of a 3D Gaussian Splatted Render |
| title_fullStr | Smartphone Bi-Camera System for Backwards Photometric Correction of a 3D Gaussian Splatted Render |
| title_full_unstemmed | Smartphone Bi-Camera System for Backwards Photometric Correction of a 3D Gaussian Splatted Render |
| title_short | Smartphone Bi-Camera System for Backwards Photometric Correction of a 3D Gaussian Splatted Render |
| title_sort | smartphone bi camera system for backwards photometric correction of a 3d gaussian splatted render |
| url | https://isprs-archives.copernicus.org/articles/XLVIII-G-2025/1677/2025/isprs-archives-XLVIII-G-2025-1677-2025.pdf |
| work_keys_str_mv | AT rjzambra smartphonebicamerasystemforbackwardsphotometriccorrectionofa3dgaussiansplattedrender AT hyang smartphonebicamerasystemforbackwardsphotometriccorrectionofa3dgaussiansplattedrender |