Self-supervised Monocular Depth Estimation for All Day Images using Domain Separation

• URL: http://arxiv.org/abs/2108.07628v1
• Date: Tue, 17 Aug 2021 13:52:19 GMT
• Title: Self-supervised Monocular Depth Estimation for All Day Images using Domain Separation
• Authors: Lina Liu, Xibin Song, Mengmeng Wang, Yong Liu and Liangjun Zhang
• Abstract summary: We propose a domain-separated network for self-supervised depth estimation of all-day images. Our approach achieves state-of-the-art depth estimation results for all-day images on the challenging Oxford RobotCar dataset.
• Score: 17.066753214406525
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Remarkable results have been achieved by DCNN based self-supervised depth estimation approaches. However, most of these approaches can only handle either day-time or night-time images, while their performance degrades for all-day images due to large domain shift and the variation of illumination between day and night images. To relieve these limitations, we propose a domain-separated network for self-supervised depth estimation of all-day images. Specifically, to relieve the negative influence of disturbing terms (illumination, etc.), we partition the information of day and night image pairs into two complementary sub-spaces: private and invariant domains, where the former contains the unique information (illumination, etc.) of day and night images and the latter contains essential shared information (texture, etc.). Meanwhile, to guarantee that the day and night images contain the same information, the domain-separated network takes the day-time images and corresponding night-time images (generated by GAN) as input, and the private and invariant feature extractors are learned by orthogonality and similarity loss, where the domain gap can be alleviated, thus better depth maps can be expected. Meanwhile, the reconstruction and photometric losses are utilized to estimate complementary information and depth maps effectively. Experimental results demonstrate that our approach achieves state-of-the-art depth estimation results for all-day images on the challenging Oxford RobotCar dataset, proving the superiority of our proposed approach.

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