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Unsupervised Single Image Underwater Depth Estimation

Citation Author(s):
Honey Gupta, Kaushik Mitra
Submitted by:
Honey Gupta
Last updated:
21 September 2019 - 6:32am
Document Type:
Presentation Slides
Document Year:
Honey Gupta
Paper Code:


Depth estimation from a single underwater image is one of the most challenging problems and is highly ill-posed. Due to the absence of large generalized underwater depth datasets and the difficulty in obtaining ground truth depth-maps, supervised learning techniques such as direct depth regression cannot be used. In this paper, we propose an unsupervised method for depth estimation from a single underwater image taken "in the wild" by using haze as a cue for depth. Our approach is based on indirect depth-map estimation where we learn the mapping functions between unpaired RGB-D terrestrial images and arbitrary underwater images to estimate the required depth-map. We propose a method which is based on the principles of cycle-consistent learning and uses dense-block based auto-encoders as generator networks. We evaluate and compare our method both quantitatively and qualitatively on various underwater images with diverse attenuation and scattering conditions and show that our method produces state-of-the-art results for unsupervised depth estimation from a single underwater image.

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Unsupervised Single Image Underwater Depth Estimation.pdf