Unsupervised Domain Adaptation in Semantic Segmentation Based on Pixel Alignment and Self-Training
Peking University(北京大学);National Engineering Laboratory for Big Data Analysis and Applications(大数据分析与应用国家工程实验室);Center for Data Science(数据科学中心);Beijing International Center for Mathematical Research (BICMR)(北京国际数学研究中心);Center for Data Science in Health and Medicine(健康医疗数据科学中心)
英文摘要:
This paper proposes an unsupervised cross-modality domain adaptation approach based on pixel alignment and self-training. Pixel alignment transfers ceT1 scans to hrT2 modality, helping to reduce domain shift in the training segmentation model. Self-training adapts the decision boundary of the segmentation network to fit the distribution of hrT2 scans. Experiment results show that PAST has outperformed the non-UDA baseline significantly, and it received rank-2 on CrossMoDA validation phase Leaderboard with a mean Dice score of 0.8395.
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