LoBSTr: Real-time Lower-body Pose Prediction from Sparse Upper-body Tracking Signals

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 65
  • Download : 0
With the popularization of games and VR/AR devices, there is a growing need for capturing human motion with a sparse set of tracking data. In this paper, we introduce a deep neural network (DNN) based method for real-time prediction of the lower-body pose only from the tracking signals of the upper-body joints. Specifically, our Gated Recurrent Unit (GRU)-based recurrent architecture predicts the lower-body pose and feet contact states from a past sequence of tracking signals of the head, hands, and pelvis. A major feature of our method is that the input signal is represented by the velocity of tracking signals. We show that the velocity representation better models the correlation between the upper-body and lower-body motions and increases the robustness against the diverse scales and proportions of the user body than position-orientation representations. In addition, to remove foot-skating and floating artifacts, our network predicts feet contact state, which is used to post-process the lower-body pose with inverse kinematics to preserve the contact. Our network is lightweight so as to run in real-time applications. We show the effectiveness of our method through several quantitative evaluations against other architectures and input representations with respect to wild tracking data obtained from commercial VR devices.
Publisher
WILEY
Issue Date
2021-05
Language
English
Article Type
Article
Citation

COMPUTER GRAPHICS FORUM, v.40, no.2, pp.265 - 275

ISSN
0167-7055
DOI
10.1111/cgf.142631
URI
http://hdl.handle.net/10203/286103
Appears in Collection
GCT-Journal Papers(저널논문)
Files in This Item
There are no files associated with this item.

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0