Real-Time Droplet Detection for Agricultural Spraying Systems: A Deep Learning Approach

Nozzles are ubiquitous in agriculture: they are used to spray and apply nutrients and pesticides to crops. The properties of droplets sprayed from nozzles are vital factors that determine the effectiveness of the spray. Droplet size and other characteristics affect spray retention and drift, which i...

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Main Authors: Nhut Huynh, Kim-Doang Nguyen
Format: Article
Language:English
Published: MDPI AG 2024-01-01
Series:Machine Learning and Knowledge Extraction
Subjects:
Online Access:https://www.mdpi.com/2504-4990/6/1/14
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author Nhut Huynh
Kim-Doang Nguyen
author_facet Nhut Huynh
Kim-Doang Nguyen
author_sort Nhut Huynh
collection DOAJ
description Nozzles are ubiquitous in agriculture: they are used to spray and apply nutrients and pesticides to crops. The properties of droplets sprayed from nozzles are vital factors that determine the effectiveness of the spray. Droplet size and other characteristics affect spray retention and drift, which indicates how much of the spray adheres to the crop and how much becomes chemical runoff that pollutes the environment. There is a critical need to measure these droplet properties to improve the performance of crop spraying systems. This paper establishes a deep learning methodology to detect droplets moving across a camera frame to measure their size. This framework is compatible with embedded systems that have limited onboard resources and can operate in real time. The method leverages a combination of techniques including resizing, normalization, pruning, detection head, unified feature map extraction via a feature pyramid network, non-maximum suppression, and optimization-based training. The approach is designed with the capability of detecting droplets of various sizes, shapes, and orientations. The experimental results demonstrate that the model designed in this study, coupled with the right combination of dataset and augmentation, achieved a 97% precision and 96.8% recall in droplet detection. The proposed methodology outperformed previous models, marking a significant advancement in droplet detection for precision agriculture applications.
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spelling doaj.art-6dff42d918ea4f6397081e94029961302024-03-27T13:52:04ZengMDPI AGMachine Learning and Knowledge Extraction2504-49902024-01-016125928210.3390/make6010014Real-Time Droplet Detection for Agricultural Spraying Systems: A Deep Learning ApproachNhut Huynh0Kim-Doang Nguyen1Department of Mechanical and Civil Engineering, Florida Institute of Technology, Melbourne, FL 32901, USADepartment of Mechanical and Civil Engineering, Florida Institute of Technology, Melbourne, FL 32901, USANozzles are ubiquitous in agriculture: they are used to spray and apply nutrients and pesticides to crops. The properties of droplets sprayed from nozzles are vital factors that determine the effectiveness of the spray. Droplet size and other characteristics affect spray retention and drift, which indicates how much of the spray adheres to the crop and how much becomes chemical runoff that pollutes the environment. There is a critical need to measure these droplet properties to improve the performance of crop spraying systems. This paper establishes a deep learning methodology to detect droplets moving across a camera frame to measure their size. This framework is compatible with embedded systems that have limited onboard resources and can operate in real time. The method leverages a combination of techniques including resizing, normalization, pruning, detection head, unified feature map extraction via a feature pyramid network, non-maximum suppression, and optimization-based training. The approach is designed with the capability of detecting droplets of various sizes, shapes, and orientations. The experimental results demonstrate that the model designed in this study, coupled with the right combination of dataset and augmentation, achieved a 97% precision and 96.8% recall in droplet detection. The proposed methodology outperformed previous models, marking a significant advancement in droplet detection for precision agriculture applications.https://www.mdpi.com/2504-4990/6/1/14agricultural nozzlesdroplet propertiesdeep learningreal-time detectionmobile platformYOLOv8
spellingShingle Nhut Huynh
Kim-Doang Nguyen
Real-Time Droplet Detection for Agricultural Spraying Systems: A Deep Learning Approach
Machine Learning and Knowledge Extraction
agricultural nozzles
droplet properties
deep learning
real-time detection
mobile platform
YOLOv8
title Real-Time Droplet Detection for Agricultural Spraying Systems: A Deep Learning Approach
title_full Real-Time Droplet Detection for Agricultural Spraying Systems: A Deep Learning Approach
title_fullStr Real-Time Droplet Detection for Agricultural Spraying Systems: A Deep Learning Approach
title_full_unstemmed Real-Time Droplet Detection for Agricultural Spraying Systems: A Deep Learning Approach
title_short Real-Time Droplet Detection for Agricultural Spraying Systems: A Deep Learning Approach
title_sort real time droplet detection for agricultural spraying systems a deep learning approach
topic agricultural nozzles
droplet properties
deep learning
real-time detection
mobile platform
YOLOv8
url https://www.mdpi.com/2504-4990/6/1/14
work_keys_str_mv AT nhuthuynh realtimedropletdetectionforagriculturalsprayingsystemsadeeplearningapproach
AT kimdoangnguyen realtimedropletdetectionforagriculturalsprayingsystemsadeeplearningapproach