pyDVS: an extensible, real-time Dynamic Vision Sensor emulator using off-the-shelf hardware

Pineda García, Garibaldi, Camilleri, Patrick, Liu, Qian and Furber, Steve (2016) pyDVS: an extensible, real-time Dynamic Vision Sensor emulator using off-the-shelf hardware. 2016 IEEE Symposium Series on Computational Intelligence (SSCI), Athens, Greece, 6-9 December 2016. Published in: 2016 IEEE Symposium Series on Computational Intelligence (SSCI). 1-7. IEEE, Athens, Greece. ISBN 9781509042401

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Vision is one of our most important senses, a vast amount of information is perceived through our eyes. Neuroscientists have performed many studies using vision as input to their experiments. Computational neuroscientists have typically used a brightness-to-rate encoding to use images as spike-based visual sources for its natural mapping. Recently, neuromorphic Dynamic Vision Sensors (DVSs) were developed and, while they have excellent capabilities, they remain scarce and relatively expensive. We propose a visual input system inspired by the behaviour of a DVS but using a conventional digital camera as a sensor and a PC to encode the images. By using readily-available components, we believe most scientists would have access to a realistic spiking visual input source. While our primary goal is to provide systems with a live real-time input, we have also been successful in transcoding well established image and video databases into spike train representations. Our main contribution is a DVS emulator framework which can be extended, as we demonstrate by adding local inhibitory behaviour, adaptive thresholds and spike-timing encoding.

Item Type: Conference Proceedings
Additional Information: contact: g.pineda-garcia at © 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works
Keywords: cameras;computer vision;image representation;image sensors;video databases;pyDVS;dynamic vision sensor emulator;off-the-shelf hardware;digital camera;image encoding;image database;video database;spike train representation;Niobium;Voltage control;Brightness;Encoding;Receivers;Visualization;Cameras
Schools and Departments: School of Engineering and Informatics > Informatics
Research Centres and Groups: Centre for Computational Neuroscience and Robotics
Subjects: Q Science > QA Mathematics > QA0075 Electronic computers. Computer science
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK6680.5 Digital video. General works
T Technology > TR Photography > TR0250 Cameras
T Technology > TR Photography > TR0624 Applied photography Including artistic, commercial, medical photography, photocopying processes
Depositing User: Garibaldi Pineda Garcia
Date Deposited: 21 Dec 2018 12:31
Last Modified: 16 Feb 2022 12:43

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