  This report outlines the proceedings of the Fourth International Workshop on
Observing and Understanding Hands in Action (HANDS 2018). The fourth
instantiation of this workshop attracted significant interest from both
academia and the industry. The program of the workshop included regular papers
that are published as the workshop's proceedings, extended abstracts, invited
posters, and invited talks. Topics of the submitted works and invited talks and
posters included novel methods for hand pose estimation from RGB, depth, or
skeletal data, datasets for special cases and real-world applications, and
techniques for hand motion re-targeting and hand gesture recognition. The
invited speakers are leaders in their respective areas of specialization,
coming from both industry and academia. The main conclusions that can be drawn
are the turn of the community towards RGB data and the maturation of some
methods and techniques, which in turn has led to increasing interest for
real-world applications.
