Sugar Beet Damage Detection during Harvesting Using Different Convolutional Neural Network Models

Abozar Nasirahmadi, Ulrike Wilczek and Oliver Hensel
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Abozar Nasirahmadi: Department of Agricultural and Biosystems Engineering, University of Kassel, 37213 Witzenhausen, Germany
Ulrike Wilczek: Department of Agricultural and Biosystems Engineering, University of Kassel, 37213 Witzenhausen, Germany
Oliver Hensel: Department of Agricultural and Biosystems Engineering, University of Kassel, 37213 Witzenhausen, Germany

Agriculture, 2021, vol. 11, issue 11, 1-13

Abstract: Mechanical damages of sugar beet during harvesting affects the quality of the final products and sugar yield. The mechanical damage of sugar beet is assessed randomly by operators of harvesters and can depend on the subjective opinion and experience of the operator due to the complexity of the harvester machines. Thus, the main aim of this study was to determine whether a digital two-dimensional imaging system coupled with convolutional neural network (CNN) techniques could be utilized to detect visible mechanical damage in sugar beet during harvesting in a harvester machine. In this research, various detector models based on the CNN, including You Only Look Once (YOLO) v4, region-based fully convolutional network (R-FCN) and faster regions with convolutional neural network features (Faster R-CNN) were developed. Sugar beet image data during harvesting from a harvester in different farming conditions were used for training and validation of the proposed models. The experimental results showed that the YOLO v4 CSPDarknet53 method was able to detect damage in sugar beet with better performance (recall, precision and F1-score of about 92, 94 and 93%, respectively) and higher speed (around 29 frames per second) compared to the other developed CNNs. By means of a CNN-based vision system, it was possible to automatically detect sugar beet damage within the sugar beet harvester machine.

Keywords: convolutional neural network; damage; deep learning; harvester; sugar beet (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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