This paper presents a classification framework based on learnable data augmentation to tackle the One-Shot Unsupervised Domain Adaptation (OS-UDA) problem. OS-UDA is the most challenging setting in Domain Adaptation, as only one single unlabeled target sample is assumed to be available for model adaptation. Driven by such single sample, our method LearnAug-UDA learns how to augment source data, making it perceptually similar to the target. As a result, a classifier trained on such augmented data will generalize well for the target domain. To achieve this, we designed an encoder-decoder architecture that exploits a perceptual loss and style transfer strategies to augment the source data. Our method achieves state-of-the-art performance on two well-known Domain Adaptation benchmarks, DomainNet and VisDA. The project code is available at https://github.com/IIT-PAVIS/LearnAug-UDA

通过可学习的数据增强技术，本文提出了一种分类框架来解决一次性无监督领域自适应问题。通过设计具有感知损失和风格转换策略的编码器-解码器架构，我们的方法可以学习如何增强源数据，并使其在知觉上类似于目标。该方法在DomainNet和VisDA这两个领域自适应基准数据集上取得了最先进的性能。

单次无监督领域自适应的可学习数据增强