Unsupervised single-shot depth estimation using perceptual reconstruction

Real-time estimation of actual object depth is an essential module for various autonomous system tasks such as 3D reconstruction, scene understanding and condition assessment. During the last decade of machine learning, extensive deployment of deep learning methods to computer vision tasks has yield...

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Bibliographic Details
Published in:Machine vision and applications 2023-09, Vol.34 (5), p.82, Article 82
Main Authors: Angermann, Christoph, Schwab, Matthias, Haltmeier, Markus, Laubichler, Christian, Jónsson, Steinbjörn
Format: Article
Language:English
Subjects:
Accuracy
Communications Engineering
Computer Science
Computer vision
Datasets
Deep learning
Face recognition
Image filters
Image Processing and Computer Vision
Image reconstruction
Machine learning
Methods
Networks
Neural networks
Original Paper
Pattern Recognition
Scene analysis
Vision systems
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Summary:Real-time estimation of actual object depth is an essential module for various autonomous system tasks such as 3D reconstruction, scene understanding and condition assessment. During the last decade of machine learning, extensive deployment of deep learning methods to computer vision tasks has yielded approaches that succeed in achieving realistic depth synthesis out of a simple RGB modality. Most of these models are based on paired RGB-depth data and/or the availability of video sequences and stereo images. However, the lack of RGB-depth pairs, video sequences, or stereo images makes depth estimation a challenging task that needs to be explored in more detail. This study builds on recent advances in the field of generative neural networks in order to establish fully unsupervised single-shot depth estimation. Two generators for RGB-to-depth and depth-to-RGB transfer are implemented and simultaneously optimized using the Wasserstein-1 distance, a novel perceptual reconstruction term, and hand-crafted image filters. We comprehensively evaluate the models using a custom-generated industrial surface depth data set as well as the Texas 3D Face Recognition Database, the CelebAMask-HQ database of human portraits and the SURREAL dataset that records body depth. For each evaluation dataset, the proposed method shows a significant increase in depth accuracy compared to state-of-the-art single-image transfer methods.
ISSN:0932-8092
1432-1769
DOI:10.1007/s00138-023-01410-5