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arXiv 1807.06962cs.CVstat.ML
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基于最大熵优化内容信息的主动学习分割

Active Learning for Segmentation by Optimizing Content Information for Maximal Entropy

ETH Zurich(苏黎世联邦理工学院);University of Zurich(苏黎世大学);University Hospital Balgrist(巴尔格里斯特大学医院)

Firat Ozdemir, Zixuan Peng, Christine Tanner, Philipp Fuernstahl, Orcun Goksel

摘要:

分割对于诸如介入规划、治疗引导、诊断、治疗决策等医学图像分析任务至关重要。深度学习在分割方面正变得越来越突出,然而,缺乏注释往往成为主要的限制。由于隐私问题和道德考虑,大多数医疗数据集都是在本地创建、管理和访问的。此外,当前的深度学习方法在不同医学成像模态之间转换解剖知识时通常是次优的。主动学习可用于选择一组信息丰富的图像样本以请求手动注释,以便最好地利用临床专家的有限注释时间以获得最佳结果,这是我们在这项工作中关注的。我们在这里的贡献是两方面的:(1)我们使用建议的惩罚方案来最大化网络抽象层的信息,以加强所选样本的域代表性,以及(2)我们提出了一个基于Borda计数的样本查询方案,用于选择样本进行分割。与基线方法的比较实验表明,与我们提出的方法,其中上述两个贡献相结合,查询的样本,导致显着提高分割性能的主动学习任务。

英文摘要:

Segmentation is essential for medical image analysis tasks such as intervention planning, therapy guidance, diagnosis, treatment decisions. Deep learning is becoming increasingly prominent for segmentation, where the lack of annotations, however, often becomes the main limitation. Due to privacy concerns and ethical considerations, most medical datasets are created, curated, and allow access only locally. Furthermore, current deep learning methods are often suboptimal in translating anatomical knowledge between different medical imaging modalities. Active learning can be used to select an informed set of image samples to request for manual annotation, in order to best utilize the limited annotation time of clinical experts for optimal outcomes, which we focus on in this work. Our contributions herein are two fold: (1) we enforce domain-representativeness of selected samples using a proposed penalization scheme to maximize information at the network abstraction layer, and (2) we propose a Borda-count based sample querying scheme for selecting samples for segmentation. Comparative experiments with baseline approaches show that the samples queried with our proposed method, where both above contributions are combined, result in significantly improved segmentation performance for this active learning task.

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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