Domain Adaptive Semantic Segmentation with Self-Supervised Depth Estimation

• URL: http://arxiv.org/abs/2104.13613v1
• Date: Wed, 28 Apr 2021 07:47:36 GMT
• Title: Domain Adaptive Semantic Segmentation with Self-Supervised Depth Estimation
• Authors: Qin Wang, Dengxin Dai, Lukas Hoyer, Olga Fink, Luc Van Gool
• Abstract summary: Domain adaptation for semantic segmentation aims to improve the model performance in the presence of a distribution shift between source and target domain. We leverage the guidance from self-supervised depth estimation, which is available on both domains, to bridge the domain gap. We demonstrate the effectiveness of our proposed approach on the benchmark tasks SYNTHIA-to-Cityscapes and GTA-to-Cityscapes.
• Score: 84.34227665232281
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Domain adaptation for semantic segmentation aims to improve the model performance in the presence of a distribution shift between source and target domain. Leveraging the supervision from auxiliary tasks~(such as depth estimation) has the potential to heal this shift because many visual tasks are closely related to each other. However, such a supervision is not always available. In this work, we leverage the guidance from self-supervised depth estimation, which is available on both domains, to bridge the domain gap. On the one hand, we propose to explicitly learn the task feature correlation to strengthen the target semantic predictions with the help of target depth estimation. On the other hand, we use the depth prediction discrepancy from source and target depth decoders to approximate the pixel-wise adaptation difficulty. The adaptation difficulty, inferred from depth, is then used to refine the target semantic segmentation pseudo-labels. The proposed method can be easily implemented into existing segmentation frameworks. We demonstrate the effectiveness of our proposed approach on the benchmark tasks SYNTHIA-to-Cityscapes and GTA-to-Cityscapes, on which we achieve the new state-of-the-art performance of $55.0\%$ and $56.6\%$, respectively. Our code is available at \url{https://github.com/qinenergy/corda}.

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