Particle identification in camera image sensors using computer vision

Miles Winter

doi:10.1016/j.astropartphys.2018.08.009

2019-01-01

DOI：10.1016/j.astropartphys.2018.08.009

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En 中文

We present a deep learning, computer vision algorithm constructed for the purposes of identifying and classifying charged particles in camera image sensors. We apply our algorithm to data collected by the Distributed Electronic Cosmic-ray Observatory (DECO), a global network of smartphones that monitors camera image sensors for the signatures of cosmic rays and other energetic particles, such as those produced by radioactive decays. The algorithm, whose core component is a convolutional neural network, achieves classification performance comparable to human quality across four distinct DECO event topologies. We apply our model to the entire DECO data set and determine a selection that achieves >= 90% purity for all event types. In particular, we estimate a purity of 95% when applied to cosmic-ray muons. The automated classification is run on the public DECO data set in real time in order to provide classified particle interaction images to users of the app and other interested members of the public. (C) 2018 Elsevier B.V. All rights reserved.

Keyword:

Cosmic rays

Deep learning

Convolutional neural network

Classification

Citizen science

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Astroparticle Physics

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university of wisconsin madison

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university of southern california

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University of California Berkeley

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University of Wisconsin System

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