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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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
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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| Summary: | 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. |
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| ISSN: | 1682-1750 2194-9034 |