A 137-mu W 1.78-mm(2) 30-Frames/s Real-Time Gesture Recognition SoC for Smart Devices
- Authors
- Le, Van Loi; Yoo, Taegeun; Kim, Ju Eon; Ba, Ngoc Le; Baek, Kwang-Hyun; Kim, Tony Tae-Hyoung
- Issue Date
- Aug-2020
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Gesture recognition; image sensor; low-power; processor; smart devices; system-on-chip; vision chip; wearables
- Citation
- IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS, v.28, no.8, pp 1909 - 1919
- Pages
- 11
- Journal Title
- IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS
- Volume
- 28
- Number
- 8
- Start Page
- 1909
- End Page
- 1919
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/48977
- DOI
- 10.1109/TVLSI.2020.2997700
- ISSN
- 1063-8210
1557-9999
- Abstract
- Gesture recognition has increasingly become one of the most popular human-machine interaction techniques for smart devices. Existing gesture recognition systems suffer from either excessive power consumption or large size, limiting their applications for ultralow-power wearable devices. This article presents an accurate area-efficient and low-power real-time gesture recognition system for smart wearable devices. The proposed work utilizes an accurate peak-based gesture classification engine with less memory and a low-resolution and low-power on-chip image sensor for achieving high area efficiency and low power. In addition, the feature extraction architecture removes fixed-pattern noises from the low-power on-chip image sensor for accuracy improvement and employs parallelism for recognition speed enhancement. Thus, the proposed system accomplishes accurate real-time gesture recognition for eight motion hand gestures with an average recognition accuracy of 90.6% and latency of 4.228 ms. Measurement results of a test chip fabricated in 65-nm CMOS demonstrate that the proposed system consumes 137.0 mu W at 30 frames/s while occupying only 1.78 mm(2), which achieves the lowest power and smallest area among the recently reported gesture recognition systems.
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