Marker-Based Extrinsic Calibration Method for Accurate Multi-Camera 3D Reconstruction
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866910934412296192 |
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| author | Garcia-D'Urso, Nahuel Sanchez-Sos, Bernabe Azorin-Lopez, Jorge Fuster-Guillo, Andres Macia-Lillo, Antonio Mora-Mora, Higinio |
| author_facet | Garcia-D'Urso, Nahuel Sanchez-Sos, Bernabe Azorin-Lopez, Jorge Fuster-Guillo, Andres Macia-Lillo, Antonio Mora-Mora, Higinio |
| contents | Accurate 3D reconstruction using multi-camera RGB-D systems critically depends on precise extrinsic calibration to achieve proper alignment between captured views. In this paper, we introduce an iterative extrinsic calibration method that leverages the geometric constraints provided by a three-dimensional marker to significantly improve calibration accuracy. Our proposed approach systematically segments and refines marker planes through clustering, regression analysis, and iterative reassignment techniques, ensuring robust geometric correspondence across camera views. We validate our method comprehensively in both controlled environments and practical real-world settings within the Tech4Diet project, aimed at modeling the physical progression of patients undergoing nutritional treatments. Experimental results demonstrate substantial reductions in alignment errors, facilitating accurate and reliable 3D reconstructions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_02539 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Marker-Based Extrinsic Calibration Method for Accurate Multi-Camera 3D Reconstruction Garcia-D'Urso, Nahuel Sanchez-Sos, Bernabe Azorin-Lopez, Jorge Fuster-Guillo, Andres Macia-Lillo, Antonio Mora-Mora, Higinio Computer Vision and Pattern Recognition Multimedia Accurate 3D reconstruction using multi-camera RGB-D systems critically depends on precise extrinsic calibration to achieve proper alignment between captured views. In this paper, we introduce an iterative extrinsic calibration method that leverages the geometric constraints provided by a three-dimensional marker to significantly improve calibration accuracy. Our proposed approach systematically segments and refines marker planes through clustering, regression analysis, and iterative reassignment techniques, ensuring robust geometric correspondence across camera views. We validate our method comprehensively in both controlled environments and practical real-world settings within the Tech4Diet project, aimed at modeling the physical progression of patients undergoing nutritional treatments. Experimental results demonstrate substantial reductions in alignment errors, facilitating accurate and reliable 3D reconstructions. |
| title | Marker-Based Extrinsic Calibration Method for Accurate Multi-Camera 3D Reconstruction |
| topic | Computer Vision and Pattern Recognition Multimedia |
| url | https://arxiv.org/abs/2505.02539 |