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Garcia-Garin, Odei; Monleón-Getino, Toni; López-Brosa, Pere; Borrell, Asunción; Aguilar, Alex; Borja-Robalino, Ricardo; Cardona, Luis; Vighi, Morgana
Environmental pollution, 03/2021, Letnik: 273Journal Article
The threats posed by floating marine macro-litter (FMML) of anthropogenic origin to the marine fauna, and marine ecosystems in general, are universally recognized. Dedicated monitoring programmes and mitigation measures are in place to address this issue worldwide, with the increasing support of new technologies and the automation of analytical processes. In the current study, we developed algorithms capable of detecting and quantifying FMML in aerial images, and a web-oriented application that allows users to identify FMML within images of the sea surface. The proposed algorithm is based on a deep learning approach that uses convolutional neural networks (CNNs) capable of learning from unstructured or unlabelled data. The CNN-based deep learning model was trained and tested using 3723 aerial images (50% containing FMML, 50% without FMML) taken by drones and aircraft over the waters of the NW Mediterranean Sea. The accuracies of image classification (performed using all the images for training and testing the model) and cross-validation (performed using 90% of images for training and 10% for testing) were 0.85 and 0.81, respectively. The Shiny package of R was then used to develop a user-friendly application to identify and quantify FMML within the aerial images. The implementation of this, and similar algorithms, allows streamlining substantially the detection and quantification of FMML, providing support to the monitoring and assessment of this environmental threat. However, the automated monitoring of FMML in the open sea still represents a technological challenge, and further research is needed to improve the accuracy of current algorithms. Display omitted •We developed deep learning models to detect floating marine litter in aerial images.•Models were trained with over 3700 images taken during drone and aircraft surveys.•The best model accuracy was 0.81 during cross-validation.•A CNN model was implemented in an application based on the “Shiny” package.•The app’ allows detecting and quantifying marine litter in the uploaded aerial images.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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