Exploring 3D Face Reconstruction and Fusion Methods for Face Verification: A Case-Study in Video Surveillance
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arXiv
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| Autori principali: | , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| author | La Cava, Simone Maurizio Concas, Sara Tolosana, Ruben Casula, Roberto Orrù, Giulia Drahansky, Martin Fierrez, Julian Marcialis, Gian Luca |
| author_facet | La Cava, Simone Maurizio Concas, Sara Tolosana, Ruben Casula, Roberto Orrù, Giulia Drahansky, Martin Fierrez, Julian Marcialis, Gian Luca |
| contents | 3D face reconstruction (3DFR) algorithms are based on specific assumptions tailored to distinct application scenarios. These assumptions limit their use when acquisition conditions, such as the subject's distance from the camera or the camera's characteristics, are different than expected, as typically happens in video surveillance. Additionally, 3DFR algorithms follow various strategies to address the reconstruction of a 3D shape from 2D data, such as statistical model fitting, photometric stereo, or deep learning. In the present study, we explore the application of three 3DFR algorithms representative of the SOTA, employing each one as the template set generator for a face verification system. The scores provided by each system are combined by score-level fusion. We show that the complementarity induced by different 3DFR algorithms improves performance when tests are conducted at never-seen-before distances from the camera and camera characteristics (cross-distance and cross-camera settings), thus encouraging further investigations on multiple 3DFR-based approaches. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_10481 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Exploring 3D Face Reconstruction and Fusion Methods for Face Verification: A Case-Study in Video Surveillance La Cava, Simone Maurizio Concas, Sara Tolosana, Ruben Casula, Roberto Orrù, Giulia Drahansky, Martin Fierrez, Julian Marcialis, Gian Luca Computer Vision and Pattern Recognition Artificial Intelligence 3D face reconstruction (3DFR) algorithms are based on specific assumptions tailored to distinct application scenarios. These assumptions limit their use when acquisition conditions, such as the subject's distance from the camera or the camera's characteristics, are different than expected, as typically happens in video surveillance. Additionally, 3DFR algorithms follow various strategies to address the reconstruction of a 3D shape from 2D data, such as statistical model fitting, photometric stereo, or deep learning. In the present study, we explore the application of three 3DFR algorithms representative of the SOTA, employing each one as the template set generator for a face verification system. The scores provided by each system are combined by score-level fusion. We show that the complementarity induced by different 3DFR algorithms improves performance when tests are conducted at never-seen-before distances from the camera and camera characteristics (cross-distance and cross-camera settings), thus encouraging further investigations on multiple 3DFR-based approaches. |
| title | Exploring 3D Face Reconstruction and Fusion Methods for Face Verification: A Case-Study in Video Surveillance |
| topic | Computer Vision and Pattern Recognition Artificial Intelligence |
| url | https://arxiv.org/abs/2409.10481 |