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DBA-Filter :
DBA-Filter : A Dynamic Background Activity Noise Filtering Algorithm for Event Cameras
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Mohamed, S. A. S. (författare)
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Yasin, J. N. (författare)
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Haghbayan, M. -H (författare)
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Heikkonen, J. (författare)
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- Tenhunen, Hannu (författare)
- KTH,Elektronik och inbyggda system
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Plosila, J. (författare)
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(creator_code:org_t)
- 2021-07-13
- 2022
- Engelska.
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Ingår i: Proceedings of the 2021 Computing Conference, Volume 1. - Cham : Springer Science and Business Media Deutschland GmbH. ; , s. 685-696
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Newly emerged dynamic vision sensors (DVS) offer a great potential over traditional sensors (e.g. CMOS) since they have a high temporal resolution in the order of μs, ultra-low power consumption and high dynamic range up to 140 dB compared to 60 dB in frame cameras. Unlike traditional cameras, the output of DVS cameras is a stream of events that encodes the location of the pixel, time, and polarity of the brightness change. An event is triggered when the change of brightness, i.e. log intensity, of a pixel exceeds a certain threshold. The output of event cameras often contains a significant amount of noise (outlier events) alongside the signal (inlier events). The main cause of that is transistor switch leakage and noise. This paper presents a dynamic background activity filtering, called DBA-filter, for event cameras based on an adaptation of the K-nearest neighbor (KNN) algorithm and the optical flow. Results show that the proposed algorithm is able to achieve a high signal to noise ratio up to 13.64 dB.
Ämnesord
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datorseende och robotik (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Vision and Robotics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- Background filtering
- Dynamic
- Event cameras
- KNN
- Noise
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)