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Deep Neural Networks for Image-Based Dietary Assessment
Published on: March 13, 2021
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Pixel-level image classification for detecting beach litter using a deep learning approach.
Mitsuko Hidaka1, Daisuke Matsuoka1, Daisuke Sugiyama1
1Research Institute for Value-Added-Information Generation (VAiG), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 3173-25 Showa-machi, Kanazawa-ku, Yokohama, Kanagawa 236-0001, Japan.
Marine Pollution Bulletin
|February 3, 2022
Summary
This study introduces an AI-powered deep learning model for automatic beach litter identification. The semantic segmentation technique accurately detects and classifies litter, offering a time- and cost-efficient solution for environmental monitoring.
Area of Science:
- Environmental Science
- Computer Science
- Artificial Intelligence
Background:
- Beach litter poses a significant threat to marine ecosystems.
- Manual monitoring of beach litter is labor-intensive, time-consuming, and costly.
- Automated solutions are needed to efficiently assess and manage coastal pollution.
Purpose of the Study:
- To develop and validate an artificial intelligence (AI) technique for automatic beach litter identification.
- To enable pixel-wise classification of beach litter using semantic segmentation.
- To provide a scalable and efficient method for monitoring coastal pollution.
Main Methods:
- A deep learning model was trained for semantic segmentation using beach images.
- Eight segmentation classes were defined, including two specific beach litter categories.
- The model's performance was evaluated using Intersection over Union (IoU), precision, and recall metrics.
Main Results:
- The semantic segmentation model achieved high accuracy in identifying and classifying beach litter.
- Performance metrics (IoU, precision, recall) indicated effective segmentation capabilities.
- The method demonstrated robustness when applied to images from diverse locations.
Conclusions:
- AI-driven semantic segmentation offers a promising, efficient approach to monitoring beach litter.
- This technique can significantly reduce the time and cost associated with manual surveys.
- Further improvements can enhance the accuracy and applicability of AI in coastal environmental management.

