ESLAM: An energy-efficient accelerator for real-time ORB-SLAM on FPGA platform


Conference Paper

© 2019 Association for Computing Machinery. Simultaneous Localization and Mapping (SLAM) is a critical task for autonomous navigation. However, due to the computational complexity of SLAM algorithms, it is very difficult to achieve realtime implementation on low-power platforms. We propose an energy-efficient architecture for real-time ORB (Oriented-FAST and Rotated-BRIEF) based visual SLAM system by accelerating the most time-consuming stages of feature extraction and matching on FPGA platform. Moreover, the original ORB descriptor pattern is reformed as a rotational symmetric manner which is much more hardware friendly. Optimizations including rescheduling and parallelizing are further utilized to improve the throughput and reduce the memory footprint. Compared with Intel i7 and ARM Cortex-A9 CPUs on TUM dataset, our FPGA realization achieves up to 3× and 31× frame rate improvement, as well as up to 71× and 25× energy efficiency improvement, respectively.

Full Text

Duke Authors

Cited Authors

  • Liu, R; Yang, J; Chen, Y; Zhao, W

Published Date

  • June 2, 2019

Published In

International Standard Serial Number (ISSN)

  • 0738-100X

International Standard Book Number 13 (ISBN-13)

  • 9781450367257

Digital Object Identifier (DOI)

  • 10.1145/3316781.3317820

Citation Source

  • Scopus