LPGL: Low-power graphics library for mobile AR headsets

Jaewon Choi, Hyeon Jung Park, Jeongyeup Paek, Rajesh Krishna Balan, Jeong Gil Ko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

We present LpGL, an OpenGL API compatible Low-power Graphics Library for energy efficient AR headset applications. We first characterize the power consumption patterns of a state of the art AR headset, Magic Leap One, and empirically show that its internal GPU is the most impactful and controllable energy consumer. Based on the preliminary studies, we design LpGL so that it uses the device’s gaze/head orientation information and geometry data to infer user perception information, intercepts application-level graphics API calls, and employs frame rate control, mesh simplification, and culling techniques to enhance energy efficiency of AR headsets without detriment of user experience. Results from a comprehensive set of controlled in-lab experiments and an IRB-approved user study with 25 participants show that LpGL reduces up to ∼22% of total energy usage while adding only 46µsec of latency per object with close to no loss in subjective user experience.

Original languageEnglish
Title of host publicationMobiSys 2019 - Proceedings of the 17th Annual International Conference on Mobile Systems, Applications, and Services
PublisherAssociation for Computing Machinery, Inc
Pages155-167
Number of pages13
ISBN (Electronic)9781450366618
DOIs
Publication statusPublished - 2019 Jun 12
Event17th ACM International Conference on Mobile Systems, Applications, and Services, MobiSys 2019 - Seoul, Korea, Republic of
Duration: 2019 Jun 172019 Jun 21

Publication series

NameMobiSys 2019 - Proceedings of the 17th Annual International Conference on Mobile Systems, Applications, and Services

Conference

Conference17th ACM International Conference on Mobile Systems, Applications, and Services, MobiSys 2019
CountryKorea, Republic of
CitySeoul
Period19/6/1719/6/21

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Computer Networks and Communications

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  • Cite this

    Choi, J., Park, H. J., Paek, J., Balan, R. K., & Ko, J. G. (2019). LPGL: Low-power graphics library for mobile AR headsets. In MobiSys 2019 - Proceedings of the 17th Annual International Conference on Mobile Systems, Applications, and Services (pp. 155-167). (MobiSys 2019 - Proceedings of the 17th Annual International Conference on Mobile Systems, Applications, and Services). Association for Computing Machinery, Inc. https://doi.org/10.1145/3307334.3326097