MetaDCSeg: Robust Medical Image Segmentation via Meta Dynamic Center Weighting

• URL: http://arxiv.org/abs/2511.18894v1
• Date: Mon, 24 Nov 2025 08:51:02 GMT
• Title: MetaDCSeg: Robust Medical Image Segmentation via Meta Dynamic Center Weighting
• Authors: Chenyu Mu, Guihai Chen, Xun Yang, Erkun Yang, Cheng Deng,
• Abstract summary: Medical image segmentation is crucial for clinical applications, but it is frequently disrupted by noisy annotations and ambiguous anatomical boundaries.<n>We propose MetaDCSeg, a robust framework that learns optimal pixel-wise weights to suppress the influence of noisy ground-truth labels.<n>Our approach utilizes weighted feature distances for foreground, background, and boundary centers, directing the model's attention toward hard-to-segment pixels near ambiguous boundaries.
• Score: 77.31583168890633
• License: http://creativecommons.org/publicdomain/zero/1.0/
• Abstract: Medical image segmentation is crucial for clinical applications, but it is frequently disrupted by noisy annotations and ambiguous anatomical boundaries, which lead to instability in model training. Existing methods typically rely on global noise assumptions or confidence-based sample selection, which inadequately mitigate the performance degradation caused by annotation noise, especially in challenging boundary regions. To address this issue, we propose MetaDCSeg, a robust framework that dynamically learns optimal pixel-wise weights to suppress the influence of noisy ground-truth labels while preserving reliable annotations. By explicitly modeling boundary uncertainty through a Dynamic Center Distance (DCD) mechanism, our approach utilizes weighted feature distances for foreground, background, and boundary centers, directing the model's attention toward hard-to-segment pixels near ambiguous boundaries. This strategy enables more precise handling of structural boundaries, which are often overlooked by existing methods, and significantly enhances segmentation performance. Extensive experiments across four benchmark datasets with varying noise levels demonstrate that MetaDCSeg consistently outperforms existing state-of-the-art methods.

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