DCFFSNet: Deep Connectivity Feature Fusion Separation Network for Medical Image Segmentation

• URL: http://arxiv.org/abs/2507.18407v2
• Date: Mon, 22 Sep 2025 07:31:39 GMT
• Title: DCFFSNet: Deep Connectivity Feature Fusion Separation Network for Medical Image Segmentation
• Abstract summary: We propose DCFFSNet (Dual-Connectivity Feature Fusion-Separation Network) for medical image segmentation.<n>It quantifies the strength between connectivity features and other features and builds a deep connectivity feature fusion-separation architecture.<n>It effectively resolves segmentation fragmentation and achieves smooth edge transitions.
• Score: 14.06374058427024
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Medical image segmentation leverages topological connectivity theory to enhance edge precision and regional consistency. However, existing deep networks integrating connectivity often forcibly inject it as an additional feature module, resulting in coupled feature spaces with no standardized mechanism to quantify different feature strengths. To address these issues, we propose DCFFSNet (Dual-Connectivity Feature Fusion-Separation Network). It introduces an innovative feature space decoupling strategy. This strategy quantifies the relative strength between connectivity features and other features. It then builds a deep connectivity feature fusion-separation architecture. This architecture dynamically balances multi-scale feature expression. Experiments were conducted on the ISIC2018, DSB2018, and MoNuSeg datasets. On ISIC2018, DCFFSNet outperformed the next best model (CMUNet) by 1.3% (Dice) and 1.2% (IoU). On DSB2018, it surpassed TransUNet by 0.7% (Dice) and 0.9% (IoU). On MoNuSeg, it exceeded CSCAUNet by 0.8% (Dice) and 0.9% (IoU). The results demonstrate that DCFFSNet exceeds existing mainstream methods across all metrics. It effectively resolves segmentation fragmentation and achieves smooth edge transitions. This significantly enhances clinical usability.

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