arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.12988cs.CV
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一对多:机器人手术视频中通过Meta学习和动态在线自适应的自适应器械分割

One to Many: Adaptive Instrument Segmentation via Meta Learning and Dynamic Online Adaptation in Robotic Surgical Video

The Chinese University of Hong Kong(香港中文大学);T stone Robotics Institute(T石头机器人研究所);Guangdong-Hong Kong-Macao Joint Laboratory of Human-Machine Intelligence-Synergy Systems(粤港澳人机协同智能系统联合实验室);Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences(中国科学院深圳先进技术研究院)

Zixu Zhao, Yueming Jin, Bo Lu, Chi-Fai Ng, Qi Dou, Yun-Hui Liu, Pheng-Ann Heng

摘要:

机器人辅助手术(RAS)中的手术器械分割-特别是使用基于学习的模型的手术器械分割-依赖于训练和测试视频从相同域采样的假设。然而,从每个新领域收集和注释足够的数据是不切实际和昂贵的。为了大大提高标记效率,我们探索了一个新的问题,即,自适应器械分割,这是为了有效地使一个源模型适应来自多个目标域的新机器人手术视频,仅在第一帧中给出注释的器械。我们提出了MDAL,一个基于元学习的动态在线自适应学习方案,具有两个阶段的框架,在预测结果的同时快速适应第一帧和部分后续帧的模型参数。MDAL通过视频特定元学习范式学习乐器的一般知识和快速适应能力。增加的梯度门排除了伪掩模的噪声监督,用于目标视频的动态在线自适应。我们经验证明,MDAL优于其他国家的最先进的方法在两个数据集(包括现实世界的RAS数据集)。在离体场景上的良好表现也有利于下游任务,如机器人辅助的机器人和相机控制。

英文摘要:

Surgical instrument segmentation in robot-assisted surgery (RAS) - especially that using learning-based models - relies on the assumption that training and testing videos are sampled from the same domain. However, it is impractical and expensive to collect and annotate sufficient data from every new domain. To greatly increase the label efficiency, we explore a new problem, i.e., adaptive instrument segmentation, which is to effectively adapt one source model to new robotic surgical videos from multiple target domains, only given the annotated instruments in the first frame. We propose MDAL, a meta-learning based dynamic online adaptive learning scheme with a two-stage framework to fast adapt the model parameters on the first frame and partial subsequent frames while predicting the results. MDAL learns the general knowledge of instruments and the fast adaptation ability through the video-specific meta-learning paradigm. The added gradient gate excludes the noisy supervision from pseudo masks for dynamic online adaptation on target videos. We demonstrate empirically that MDAL outperforms other state-of-the-art methods on two datasets (including a real-world RAS dataset). The promising performance on ex-vivo scenes also benefits the downstream tasks such as robot-assisted suturing and camera control.

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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