A unified uncertainty network for tumor segmentation using uncertainty cross entropy loss and prototype similarity
A unified uncertainty network for tumor segmentation using uncertainty cross entropy loss and prototype similarity
复制标题
使用不确定性交叉熵损失和原型相似性进行肿瘤分割的统一不确定性网络
DOI:
10.1016/j.knosys.2022.108739
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发表时间:
2022-04
影响因子:
8.8
通讯作者:
Tianyu Shi
中科院分区:
文献类型:
--
作者:
Zhaoshuo Diao;Huiyan Jiang;Tianyu Shi
Uncertainty estimation and out-of-distribution (OOD) detection are topics of practical significance in deep convolutional neural network-based tumor segmentation tasks. We propose a unified uncertainty segmentation network to handle these two tasks with a single network. The uncertainty cross entropy loss is proposed to guide the network to directly output the prediction uncertainty of each pixel instead of executing several times in the prediction phase. We extend the uncertainty to the case level to address OOD sample detection problems. Case-level uncertainty is estimated based on prototype similarity. We perform pixel-level uncertainty experiments and OOD detection experiments on four datasets. The experimental results show that our proposed method is more suitable for uncertainty estimation in tumor segmentation than existing methods. Our proposed method only needs to modify the network output and loss function and does not need to execute the network multiple times when estimating uncertainty. Moreover, our method shows improved performance in tumor segmentation.
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