From Cross-Modal to Mixed-Modal Visible-Infrared Re-Identification

Fuente: arXiv
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Autores principales: Alehdaghi, Mahdi, Bhattacharya, Rajarshi, Shamsolmoali, Pourya, Cruz, Rafael M. O., Granger, Eric
Formato: Preprint
Publicado: 2025
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author Alehdaghi, Mahdi
Bhattacharya, Rajarshi
Shamsolmoali, Pourya
Cruz, Rafael M. O.
Granger, Eric
author_facet Alehdaghi, Mahdi
Bhattacharya, Rajarshi
Shamsolmoali, Pourya
Cruz, Rafael M. O.
Granger, Eric
contents Visible-infrared person re-identification (VI-ReID) aims to match individuals across different camera modalities, a critical task in modern surveillance systems. While current VI-ReID methods focus on cross-modality matching, real-world applications often involve mixed galleries containing both V and I images, where state-of-the-art methods show significant performance limitations due to large domain shifts and low discrimination across mixed modalities. This is because gallery images from the same modality may have lower domain gaps but correspond to different identities. This paper introduces a novel mixed-modal ReID setting, where galleries contain data from both modalities. To address the domain shift among inter-modal and low discrimination capacity in intra-modal matching, we propose the Mixed Modality-Erased and -Related (MixER) method. The MixER learning approach disentangles modality-specific and modality-shared identity information through orthogonal decomposition, modality-confusion, and ID-modality-related objectives. MixER enhances feature robustness across modalities, improving cross-modal and mixed-modal settings performance. Our extensive experiments on the SYSU-MM01, RegDB and LLMC datasets indicate that our approach can provide state-of-the-art results using a single backbone, and showcase the flexibility of our approach in mixed gallery applications.
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institution arXiv
publishDate 2025
record_format arxiv
spellingShingle From Cross-Modal to Mixed-Modal Visible-Infrared Re-Identification
Alehdaghi, Mahdi
Bhattacharya, Rajarshi
Shamsolmoali, Pourya
Cruz, Rafael M. O.
Granger, Eric
Computer Vision and Pattern Recognition
Visible-infrared person re-identification (VI-ReID) aims to match individuals across different camera modalities, a critical task in modern surveillance systems. While current VI-ReID methods focus on cross-modality matching, real-world applications often involve mixed galleries containing both V and I images, where state-of-the-art methods show significant performance limitations due to large domain shifts and low discrimination across mixed modalities. This is because gallery images from the same modality may have lower domain gaps but correspond to different identities. This paper introduces a novel mixed-modal ReID setting, where galleries contain data from both modalities. To address the domain shift among inter-modal and low discrimination capacity in intra-modal matching, we propose the Mixed Modality-Erased and -Related (MixER) method. The MixER learning approach disentangles modality-specific and modality-shared identity information through orthogonal decomposition, modality-confusion, and ID-modality-related objectives. MixER enhances feature robustness across modalities, improving cross-modal and mixed-modal settings performance. Our extensive experiments on the SYSU-MM01, RegDB and LLMC datasets indicate that our approach can provide state-of-the-art results using a single backbone, and showcase the flexibility of our approach in mixed gallery applications.
title From Cross-Modal to Mixed-Modal Visible-Infrared Re-Identification
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2501.13307