Co-Seg++: Mutual Prompt-Guided Collaborative Learning for Versatile Medical Segmentation

• URL: http://arxiv.org/abs/2506.17159v1
• Date: Fri, 20 Jun 2025 17:05:09 GMT
• Title: Co-Seg++: Mutual Prompt-Guided Collaborative Learning for Versatile Medical Segmentation
• Authors: Qing Xu, Yuxiang Luo, Wenting Duan, Zhen Chen,
• Abstract summary: Medical image analysis is critical yet challenged by the need of jointly segmenting organs or tissues.<n>Existing studies typically formulated different segmentation tasks in isolation.<n>We propose a Co-Seg++ framework for versatile medical segmentation.
• Score: 4.584473085778697
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Medical image analysis is critical yet challenged by the need of jointly segmenting organs or tissues, and numerous instances for anatomical structures and tumor microenvironment analysis. Existing studies typically formulated different segmentation tasks in isolation, which overlooks the fundamental interdependencies between these tasks, leading to suboptimal segmentation performance and insufficient medical image understanding. To address this issue, we propose a Co-Seg++ framework for versatile medical segmentation. Specifically, we introduce a novel co-segmentation paradigm, allowing semantic and instance segmentation tasks to mutually enhance each other. We first devise a spatio-temporal prompt encoder (STP-Encoder) to capture long-range spatial and temporal relationships between segmentation regions and image embeddings as prior spatial constraints. Moreover, we devise a multi-task collaborative decoder (MTC-Decoder) that leverages cross-guidance to strengthen the contextual consistency of both tasks, jointly computing semantic and instance segmentation masks. Extensive experiments on diverse CT and histopathology datasets demonstrate that the proposed Co-Seg++ outperforms state-of-the-arts in the semantic, instance, and panoptic segmentation of dental anatomical structures, histopathology tissues, and nuclei instances. The source code is available at https://github.com/xq141839/Co-Seg-Plus.

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