pLitterStreet: Street Level Plastic Litter Detection and Mapping

Sriram Reddy Mandhati; N. Lakmal Deshapriya; Chatura Lavanga Mendis; Kavinda Gunasekara; Frank Yrle; Angsana Chaksan; Sujit Sanjeev

arXiv · 2401.14719

pLitterStreet: Street Level Plastic Litter Detection and Mapping

Sriram Reddy Mandhati·N. Lakmal Deshapriya·Chatura Lavanga Mendis·Kavinda Gunasekara·Frank Yrle·Angsana Chaksan·Sujit Sanjeev

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Abstract

Plastic pollution is a critical environmental issue, and detecting and monitoring plastic litter is crucial to mitigate its impact. This paper presents the methodology of mapping street-level litter, focusing primarily on plastic waste and the location of trash bins. Our methodology involves employing a deep learning technique to identify litter and trash bins from street-level imagery taken by a camera mounted on a vehicle. Subsequently, we utilized heat maps to visually represent the distribution of litter and trash bins throughout cities. Additionally, we provide details about the creation of an open-source dataset ("pLitterStreet") which was developed and utilized in our approach. The dataset contains more than 13,000 fully annotated images collected from vehicle-mounted cameras and includes bounding box labels. To evaluate the effectiveness of our dataset, we tested four well known state-of-the-art object detection algorithms (Faster R-CNN, RetinaNet, YOLOv3, and YOLOv5), achieving an average precision (AP) above 40%. While the results show average metrics, our experiments demonstrated the reliability of using vehicle-mounted cameras for plastic litter mapping. The "pLitterStreet" can also be a valuable resource for researchers and practitioners to develop and further improve existing machine learning models for detecting and mapping plastic litter in an urban environment. The dataset is open-source and more details about the dataset and trained models can be found at https://github.com/gicait/pLitter.

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Sriram Reddy Mandhati, N. Lakmal Deshapriya, Chatura Lavanga Mendis, Kavinda Gunasekara, Frank Yrle, Angsana Chaksan, Sujit Sanjeev. 2024-01-26. pLitterStreet: Street Level Plastic Litter Detection and Mapping. https://arxiv.org/abs/2401.14719

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