• Media type: Text; E-Article
  • Title: CADTrack : Instructions and Support for Orientation Disambiguation of Near-Symmetrical Objects
  • Contributor: Evangelista Belo, João Marcelo [Author]; Wissing, Jon [Author]; Feuchtner, Tiare [Author]; Grønbæk, Kaj [Author]
  • Published: KOPS - The Institutional Repository of the University of Konstanz, 2023
  • Published in: Proceedings of the ACM on Human-Computer Interaction. ACM. 2023, 7(ISS), 426. eISSN 2573-0142. Available under: doi:10.1145/3626462
  • Language: English
  • DOI: https://doi.org/10.1145/3626462
  • ISBN: 1869960386
  • Origination:
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  • Description: Determining the correct orientation of objects can be critical to succeed in tasks like assembly and quality assurance. In particular, near-symmetrical objects may require careful inspection of small visual features to disambiguate their orientation. We propose CADTrack, a digital assistant for providing instructions and support for tasks where the object orientation matters but may be hard to disambiguate with the naked eye. Additionally, we present a deep learning pipeline for tracking the orientation of near-symmetrical objects. In contrast to existing approaches, which require labeled datasets involving laborious data acquisition and annotation processes, CADTrack uses a digital model of the object to generate synthetic data and train a convolutional neural network. Furthermore, we extend the architecture of Mask R-CNN with a confidence prediction branch to avoid errors caused by misleading orientation guidance. We evaluate CADTrack in a user study, comparing our tracking-based instructions to other methods to confirm the benefits of our approach in terms of preference and required effort. ; published
  • Access State: Open Access