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• W4387211227 abstract "Continual test-time adaptation (CTTA) aims to continuously adapt a source-trained model to a target domain with minimal performance loss while assuming no access to the source data. Typically, source models are trained with empirical risk minimization (ERM) and assumed to perform reasonably on the target domain to allow for further adaptation. However, ERM-trained models often fail to perform adequately on a severely drifted target domain, resulting in unsatisfactory adaptation results. To tackle this issue, we propose a generalizable CTTA framework. First, we incorporate domain-invariant shape modeling into the model and train it using domain-generalization (DG) techniques, promoting target-domain adaptability regardless of the severity of the domain shift. Then, an uncertainty and shape-aware mean teacher network performs adaptation with uncertainty-weighted pseudo-labels and shape information. Lastly, small portions of the model’s weights are stochastically reset to the initial domain-generalized state at each adaptation step, preventing the model from ‘diving too deep’ into any specific test samples. The proposed method demonstrates strong continual adaptability and outperforms its peers on three cross-domain segmentation tasks. Code is available at https://github.com/ThisGame42/CTTA ." @default.
• W4387211227 created "2023-10-01" @default.
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• W4387211227 date "2023-01-01" @default.
• W4387211227 modified "2023-10-01" @default.
• W4387211227 title "Uncertainty and Shape-Aware Continual Test-Time Adaptation for Cross-Domain Segmentation of Medical Images" @default.
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• W4387211227 doi "https://doi.org/10.1007/978-3-031-43898-1_63" @default.
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