Multi-Modal Object Re-Identification with Prompt-S6 and Semantic-Aware Knowledge Guidance

• URL: http://arxiv.org/abs/2607.23451v1
• Date: Sun, 26 Jul 2026 04:29:48 GMT
• Title: Multi-Modal Object Re-Identification with Prompt-S6 and Semantic-Aware Knowledge Guidance
• Abstract summary: PRISM is a novel multi-modal object ReID framework built upon Prompt-S6 (PS6) and semantic-aware knowledge guidance.<n>PS6 maintains the linear complexity and strong sequence modeling capability of Mamba while enabling efficient cross-modal interaction.<n>With the proposed modules, PRISM generates more robust multi-modal representations under complex scenarios.
• Score: 48.70189792908997
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Multi-modal object Re-Identification (ReID) aims to retrieve specific objects by integrating complementary information from multiple modalities. However, existing multi-modal ReID methods do not effectively address background interference suppression or achieve tri-modal alignment, instead focusing on pairwise feature fusion. Moreover, many current aggregation approaches suffer from high computational complexity. To address these limitations, we propose PRISM, a novel multi-modal ReID framework built upon Prompt-S6 (PS6) and semantic-aware knowledge guidance. PS6 maintains the linear complexity and strong sequence modeling capability of Mamba while enabling efficient cross-modal interaction. Leveraging these advantages, we design two key components: Semantic-Driven Token Pruning (SDTP) and Progressive Fusion Network (PFN). Parsing semantic priors from the segmentation foundation models, the SDTP then leverages these priors and applies dynamic token pruning to suppress background noise and refine feature representations. The PFN progressively aggregates multi-modal features to achieve tri-modal alignment and fully exploit modality complementarity. With the proposed modules, PRISM generates more robust multi-modal representations under complex scenarios. Extensive experiments on four multi-modal object ReID benchmarks demonstrate the effectiveness and efficiency of our approach. The source code is available at https://github.com/zw-absin/PRISM.

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