Deriving Agricultural Field Boundaries for Crop Management from Satellite Images Using Semantic Feature Pyramid Network

We propose a Semantic Feature Pyramid Network (FPN)-based algorithm to derive agricultural field boundaries and internal non-planting regions from satellite imagery. It is aimed at providing guidance not only for land use management, but more importantly for harvest or crop protection machinery plan...

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Main Authors: Yang Xu, Xinyu Xue, Zhu Sun, Wei Gu, Longfei Cui, Yongkui Jin, Yubin Lan
Format: Article
Language:English
Published: MDPI AG 2023-06-01
Series:Remote Sensing
Subjects:
Online Access:https://www.mdpi.com/2072-4292/15/11/2937
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author Yang Xu
Xinyu Xue
Zhu Sun
Wei Gu
Longfei Cui
Yongkui Jin
Yubin Lan
author_facet Yang Xu
Xinyu Xue
Zhu Sun
Wei Gu
Longfei Cui
Yongkui Jin
Yubin Lan
author_sort Yang Xu
collection DOAJ
description We propose a Semantic Feature Pyramid Network (FPN)-based algorithm to derive agricultural field boundaries and internal non-planting regions from satellite imagery. It is aimed at providing guidance not only for land use management, but more importantly for harvest or crop protection machinery planning. The Semantic Convolutional Neural Network (CNN) FPN is first employed for pixel-wise classification on each remote sensing image, detecting agricultural parcels; a post-processing method is then developed to transfer attained pixel classification results into closed contours, as field boundaries and internal non-planting regions, including slender paths (walking or water) and obstacles (trees or electronic poles). Three study sites with different plot sizes (0.11 ha, 1.39 ha, and 2.24 ha) are selected to validate the effectiveness of our algorithm, and the performance compared with other semantic CNN (including U-Net, U-Net++, PSP-Net, and Link-Net)-based algorithms. The test results show that the crop acreage information, field boundaries, and internal non-planting area could be determined by using the proposed algorithm in different places. When the boundary number applicable for machinery planning is attained, average and total crop planting area values all remain closer to the reference ones generally when using the semantic FPN with post-processing, compared with other methods. The post-processing methodology would greatly decrease the number of inapplicable and redundant field boundaries for path planning using different CNN models. In addition, the crop planting mode and scale (especially the small-scale planting and small/blurred gap between fields) both make a great difference to the boundary delineation and crop acreage determination.
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spelling doaj.art-cdec17640c1044f89c6a6aac96e9b1962023-11-18T08:30:46ZengMDPI AGRemote Sensing2072-42922023-06-011511293710.3390/rs15112937Deriving Agricultural Field Boundaries for Crop Management from Satellite Images Using Semantic Feature Pyramid NetworkYang Xu0Xinyu Xue1Zhu Sun2Wei Gu3Longfei Cui4Yongkui Jin5Yubin Lan6Nanjing Institute of Agriculture Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, ChinaNanjing Institute of Agriculture Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, ChinaNanjing Institute of Agriculture Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, ChinaNanjing Institute of Agriculture Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, ChinaNanjing Institute of Agriculture Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, ChinaNanjing Institute of Agriculture Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, ChinaCollege of Electronic Engineering, South China Agricultural University, Guangzhou 510642, ChinaWe propose a Semantic Feature Pyramid Network (FPN)-based algorithm to derive agricultural field boundaries and internal non-planting regions from satellite imagery. It is aimed at providing guidance not only for land use management, but more importantly for harvest or crop protection machinery planning. The Semantic Convolutional Neural Network (CNN) FPN is first employed for pixel-wise classification on each remote sensing image, detecting agricultural parcels; a post-processing method is then developed to transfer attained pixel classification results into closed contours, as field boundaries and internal non-planting regions, including slender paths (walking or water) and obstacles (trees or electronic poles). Three study sites with different plot sizes (0.11 ha, 1.39 ha, and 2.24 ha) are selected to validate the effectiveness of our algorithm, and the performance compared with other semantic CNN (including U-Net, U-Net++, PSP-Net, and Link-Net)-based algorithms. The test results show that the crop acreage information, field boundaries, and internal non-planting area could be determined by using the proposed algorithm in different places. When the boundary number applicable for machinery planning is attained, average and total crop planting area values all remain closer to the reference ones generally when using the semantic FPN with post-processing, compared with other methods. The post-processing methodology would greatly decrease the number of inapplicable and redundant field boundaries for path planning using different CNN models. In addition, the crop planting mode and scale (especially the small-scale planting and small/blurred gap between fields) both make a great difference to the boundary delineation and crop acreage determination.https://www.mdpi.com/2072-4292/15/11/2937field boundary delineationinternal non-planting region detectionsatellite imageryland use guidanceagricultural machinery planningcrop acreage
spellingShingle Yang Xu
Xinyu Xue
Zhu Sun
Wei Gu
Longfei Cui
Yongkui Jin
Yubin Lan
Deriving Agricultural Field Boundaries for Crop Management from Satellite Images Using Semantic Feature Pyramid Network
Remote Sensing
field boundary delineation
internal non-planting region detection
satellite imagery
land use guidance
agricultural machinery planning
crop acreage
title Deriving Agricultural Field Boundaries for Crop Management from Satellite Images Using Semantic Feature Pyramid Network
title_full Deriving Agricultural Field Boundaries for Crop Management from Satellite Images Using Semantic Feature Pyramid Network
title_fullStr Deriving Agricultural Field Boundaries for Crop Management from Satellite Images Using Semantic Feature Pyramid Network
title_full_unstemmed Deriving Agricultural Field Boundaries for Crop Management from Satellite Images Using Semantic Feature Pyramid Network
title_short Deriving Agricultural Field Boundaries for Crop Management from Satellite Images Using Semantic Feature Pyramid Network
title_sort deriving agricultural field boundaries for crop management from satellite images using semantic feature pyramid network
topic field boundary delineation
internal non-planting region detection
satellite imagery
land use guidance
agricultural machinery planning
crop acreage
url https://www.mdpi.com/2072-4292/15/11/2937
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