FLGR: Fixed Length Gists Representation Learning for RNN-HMM Hybrid-Based Neuromorphic Continuous Gesture Recognition

Frontiers in Neuroscience
Guang ChenAlois C Knoll

Abstract

A neuromorphic vision sensors is a novel passive sensing modality and frameless sensors with several advantages over conventional cameras. Frame-based cameras have an average frame-rate of 30 fps, causing motion blur when capturing fast motion, e.g., hand gesture. Rather than wastefully sending entire images at a fixed frame rate, neuromorphic vision sensors only transmit the local pixel-level changes induced by the movement in a scene when they occur. This leads to advantageous characteristics, including low energy consumption, high dynamic range, a sparse event stream and low response latency. In this study, a novel representation learning method was proposed: Fixed Length Gists Representation (FLGR) learning for event-based gesture recognition. Previous methods accumulate events into video frames in a time duration (e.g., 30 ms) to make the accumulated image-level representation. However, the accumulated-frame-based representation waives the friendly event-driven paradigm of neuromorphic vision sensor. New representation are urgently needed to fill the gap in non-accumulated-frame-based representation and exploit the further capabilities of neuromorphic vision. The proposed FLGR is a sequence learned from mixture density aut...Continue Reading

References

Oct 23, 1997·Neural Computation·S Hochreiter, J Schmidhuber
Mar 7, 2012·IEEE Transactions on Pattern Analysis and Machine Intelligence·Shuiwang JiKai Yu
Dec 7, 2013·Frontiers in Neuroscience·Tobi Delbruck, Manuel Lang
Nov 25, 2014·IEEE Transactions on Neural Networks and Learning Systems·Jun Haeng LeeByung Chang Kang
Mar 10, 2016·IEEE Transactions on Pattern Analysis and Machine Intelligence·Di WuJean-Marc Odobez
Sep 16, 2016·Frontiers in Neuroscience·Yuhuang HuTobi Delbruck
Jun 8, 2018·Frontiers in Neuroscience·Yujie WuLuping Shi

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Methods Mentioned

BETA
chip

Software Mentioned

AER
TrueNorth
HmmSeg
FLGR

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