Towards Motion-aware Referring Image Segmentation

• URL: http://arxiv.org/abs/2603.17413v1
• Date: Wed, 18 Mar 2026 06:45:59 GMT
• Title: Towards Motion-aware Referring Image Segmentation
• Abstract summary: We introduce an efficient data augmentation scheme that extracts motion-centric phrases from original captions.<n>We also propose Multimodal Radial Contrastive Learning (MRaCL), performed on fused image-text embeddings.<n>Experiments show our method substantially improves performance on motion-centric queries across multiple RIS models.
• Score: 26.074329533044914
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Referring Image Segmentation (RIS) requires identifying objects from images based on textual descriptions. We observe that existing methods significantly underperform on motion-related queries compared to appearance-based ones. To address this, we first introduce an efficient data augmentation scheme that extracts motion-centric phrases from original captions, exposing models to more motion expressions without additional annotations. Second, since the same object can be described differently depending on the context, we propose Multimodal Radial Contrastive Learning (MRaCL), performed on fused image-text embeddings rather than unimodal representations. For comprehensive evaluation, we introduce a new test split focusing on motion-centric queries, and introduce a new benchmark called M-Bench, where objects are distinguished primarily by actions. Extensive experiments show our method substantially improves performance on motion-centric queries across multiple RIS models, maintaining competitive results on appearance-based descriptions. Codes are available at https://github.com/snuviplab/MRaCL

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