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arXiv 2406.18074cs.CVcs.AI

高保真原型的小样本医学图像分割

Few-Shot Medical Image Segmentation with High-Fidelity Prototypes

University of Shanghai for Science and Technology(上海理工大学);Universität Hamburg(汉堡大学);Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences(中国科学院深圳先进技术研究院);University of Electronic Science and Technology of China(电子科技大学);University of Surrey(萨里大学)

Song Tang, Shaxu Yan, Xiaozhi Qi, Jianxin Gao, Mao Ye, Jianwei Zhang, Xiatian Zhu

AI总结:

针对小样本医学图像分割中现有原型方法在复杂背景下失效的问题,提出细节自精炼原型网络(DSPNet),通过聚类与通道融合构建高保真前景原型,并利用稀疏通道感知整合背景信息,在三个医学基准上超越现有方法。

摘要:

小样本语义分割(FSS)旨在使预训练模型适应新类别,每个类别仅需一个标注训练样本。尽管基于原型的方法已取得显著成功,但现有模型仅限于对象区分明显且背景复杂度不高的成像场景,例如自然图像。这使得此类模型在医学成像中表现不佳,因为医学图像不满足这两个条件。为解决此问题,我们提出了一种新颖的细节自精炼原型网络(DSPNet),以构建更全面表示对象前景和背景的高保真原型。具体而言,为在保持捕获的细节语义的同时构建全局语义,我们通过聚类建模多模态结构,然后以通道方式融合来学习前景原型。考虑到背景在空间维度上通常没有明显的语义关系,我们在稀疏通道感知调控下整合通道特定的结构信息。在三个具有挑战性的医学图像基准上的大量实验表明,DSPNet优于先前最先进的方法。

英文摘要:

Few-shot Semantic Segmentation (FSS) aims to adapt a pretrained model to new classes with as few as a single labelled training sample per class. Despite the prototype based approaches have achieved substantial success, existing models are limited to the imaging scenarios with considerably distinct objects and not highly complex background, e.g., natural images. This makes such models suboptimal for medical imaging with both conditions invalid. To address this problem, we propose a novel Detail Self-refined Prototype Network (DSPNet) to constructing high-fidelity prototypes representing the object foreground and the background more comprehensively. Specifically, to construct global semantics while maintaining the captured detail semantics, we learn the foreground prototypes by modelling the multi-modal structures with clustering and then fusing each in a channel-wise manner. Considering that the background often has no apparent semantic relation in the spatial dimensions, we integrate channel-specific structural information under sparse channel-aware regulation. Extensive experiments on three challenging medical image benchmarks show the superiority of DSPNet over previous state-of-the-art methods.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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