Using deep learning to count albatrosses from space

Bowler, Ellen; Fretwell, Peter T. ORCID: https://orcid.org/0000-0002-1988-5844; French, Geoffrey; Mackiewicz, Michal. 2019 Using deep learning to count albatrosses from space. In: IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 10099-10102.

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Official URL: http://dx.doi.org/10.1109/IGARSS.2019.8898079

Abstract/Summary

In this paper we test the use of a deep learning approach to automatically count Wandering Albatrosses in Very High Resolution (VHR) satellite imagery. We use a dataset of manually labelled imagery provided by the British Antarctic Survey to train and develop our methods. We employ a U-Net architecture, designed for image segmentation, to simultaneously classify and localise potential albatrosses. We aid training with the use of the Focal Loss criterion, to deal with extreme class imbalance in the dataset. Initial results achieve peak precision and recall values of approximately 80%. Finally we assess the model's performance in relation to inter-observer variation, by comparing errors against an image labelled by multiple observers. We conclude model accuracy falls within the range of human counters. We hope that the methods will streamline the analysis of VHR satellite images, enabling more frequent monitoring of a species which is of high conservation concern.

Item Type:	Publication - Book Section
Digital Object Identifier (DOI):	https://doi.org/10.1109/IGARSS.2019.8898079
ISBN:	9781538691533
Date made live:	23 Jan 2020 10:32 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/526568

Item Type:

Publication - Book Section

Digital Object Identifier (DOI):

https://doi.org/10.1109/IGARSS.2019.8898079

ISBN:

9781538691533

Date made live:

23 Jan 2020 10:32 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/526568