arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1909.07809cs.CV
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学会用几个边界框分割器官

Learn to Segment Organs with a Few Bounding Boxes

Technical University of Munich(慕尼黑工业大学)

Abhijeet Parida, Arianne Tran, Nassir Navab, Shadi Albarqouni

摘要:

语义分割是医学领域中的一项重要任务,用于识别器官和病理等重要结构的准确范围和方向。深度神经网络可以通过利用来自大型标记良好的数据集的信息来很好地执行此任务。本文旨在提出一种方法,减轻了广泛的良好标记的数据集的必要性。该方法还通过基于限界框注释实现分割来解决半监督问题,从而避免了对完整像素级注释的需要。所提出的网络由基于单个U-Net的无分支架构组成,该架构仅使用该特定器官的4个示例注释来生成针对不可见人体器官的Few-Shot分割。通过交替地最小化用于原型学习的最近邻损失和用于分割学习的加权交叉熵损失来训练网络,以执行快速3D分割,中值分数为54.64%。

英文摘要:

Semantic segmentation is an import task in the medical field to identify the exact extent and orientation of significant structures like organs and pathology. Deep neural networks can perform this task well by leveraging the information from a large well-labeled data-set. This paper aims to present a method that mitigates the necessity of an extensive well-labeled data-set. This method also addresses semi-supervision by enabling segmentation based on bounding box annotations, avoiding the need for full pixel-level annotations. The network presented consists of a single U-Net based unbranched architecture that generates a few-shot segmentation for an unseen human organ using just 4 example annotations of that specific organ. The network is trained by alternately minimizing the nearest neighbor loss for prototype learning and a weighted cross-entropy loss for segmentation learning to perform a fast 3D segmentation with a median score of 54.64%.

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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