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黄子臻, 王雷, 张玉坤, 李彬. 用于医学图像分割的半监督对抗自集成网络[J]. 计算机辅助设计与图形学学报. DOI: 10.3724/SP.J.1089.2023-00654
引用本文: 黄子臻, 王雷, 张玉坤, 李彬. 用于医学图像分割的半监督对抗自集成网络[J]. 计算机辅助设计与图形学学报. DOI: 10.3724/SP.J.1089.2023-00654
Zizhen Huang, Lei Wang, Yukun Zhang, Bin Li. The Semi-supervised Adversarial Self-integration Network for Medical Image Segmentation[J]. Journal of Computer-Aided Design & Computer Graphics. DOI: 10.3724/SP.J.1089.2023-00654
Citation: Zizhen Huang, Lei Wang, Yukun Zhang, Bin Li. The Semi-supervised Adversarial Self-integration Network for Medical Image Segmentation[J]. Journal of Computer-Aided Design & Computer Graphics. DOI: 10.3724/SP.J.1089.2023-00654

用于医学图像分割的半监督对抗自集成网络

The Semi-supervised Adversarial Self-integration Network for Medical Image Segmentation

  • 摘要: 为了克服传统的U-Net网络在医学图像分割领域存在的无法有效提取上下文信息、固定的感受野受限制等缺点, 提出一种半监督对抗自集成网络, 其由分割网络和判别网络2部分组成. 前者采用卷积神经网络和Vision Transformer相结合的半监督学习策略; 后者采用对抗一致性训练策略, 利用两个基于一致性学习的判别器获取标记和未标记数据之间的先验关系; 引入基于注意力的动态卷积, 能够根据输入样本的结构信息自适应地调整网络的权重, 增强特征表示能力并降低过拟合风险. 在ACDC, LA和Pancreas 3个经典数据集上比较5种网络的实验结果表明, 所提网络在Dice系数、Jaccard系数、Hausdorff距离和平均表面距离分别提高了3.4%~3.9%, 2.9%~4.0%, 43.5%~53.4%, 65.1%~68.7%, 尤其是在使用较少标记数据的情况下, 实现了更好的分割结果.

     

    Abstract: To overcome the limitations of the traditional U-Net architectures, such as the ineffective context extraction and restricted receptive fields, a novel semi-supervised adversarial self-integration network that consists of segmentation and discriminative network, is proposed. The former used the semi-supervised learning strategy by integrating the convolutional neural networks and Vision Transformers, while the latter uses the adversarial consistency training with two consistency-based discriminators to capture the prior relationships. Because of the attention-based dynamic convolution, the network weights can be adaptively adjusted according to the sample’s structure, thereby the feature representation was improved and the overfitting risks was reduced. By comparing five methods on the ACDC, LA, and Pancreas datasets, experimental results demonstrated that the Dice coefficient, Jaccard coefficient, Hausdorff distance and the average surface distance was respectively improved by 3.4%~3.9%, 2.9%~4.0%, 43.5%~53.4%, 65.1%~68.7%, and better segmentation results can be also obtained for the case of fewer labeled data.

     

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