Automated Walnut Classification and Weight Estimation Using Camera Images and ANN

Walnuts are a nutritious and delicious nut, as well as a nut that stands out with its economic value. Traditional methods are still widely used to harvest, dry, store, and finally market walnuts. However, these methods are often time‐consuming, costly, and require considerable expertise. Using image‐based deep learning classifiers to automatically classify walnut varieties can provide significant advantages in the agricultural sector and has the potential to revolutionize this field. The aim of this study is to automatically classify walnuts and predict their weights using camera images and artificial neural networks (ANNs). In the study, a dataset was created by collecting a total of 600 images from three different walnut varieties, namely Maraş 18, Chandler, and Bahri (Yayla). 70% of the samples were used as training data, 15% as validation data, and 15% as test data, and the network training was continued until the network performance dropped below 0.001%. The ANN model achieved 100% success in the classification of walnut varieties and 79% ( R 2 ) success in weighting. These results once again demonstrate the potential of artificial intelligence applications in agriculture. In future studies, it is recommended to test different artificial intelligence algorithms for the classification and weighting of different nuts.

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Publication Details

Journal
New Zealand Journal of Crop and Horticultural Science
Published
2026-02-15
DOI
https://doi.org/10.1002/nzc2.70007
Primary Topic
Smart Agriculture and AI
Type
article
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article

Automated Walnut Classification and Weight Estimation Using Camera Images and ANN

İbrahim Hakkı Kadirhanoğullari
New Zealand Journal of Crop and Horticultural Science
Smart Agriculture and AI
article

Automated Walnut Classification and Weight Estimation Using Camera Images and ANN

İbrahim Hakkı Kadirhanoğullari
article en

Abstract

Walnuts are a nutritious and delicious nut, as well as a nut that stands out with its economic value. Traditional methods are still widely used to harvest, dry, store, and finally market walnuts. However, these methods are often time‐consuming, costly, and require considerable expertise. Using image‐based deep learning classifiers to automatically classify walnut varieties can provide significant advantages in the agricultural sector and has the potential to revolutionize this field. The aim of this study is to automatically classify walnuts and predict their weights using camera images and artificial neural networks (ANNs). In the study, a dataset was created by collecting a total of 600 images from three different walnut varieties, namely Maraş 18, Chandler, and Bahri (Yayla). 70% of the samples were used as training data, 15% as validation data, and 15% as test data, and the network training was continued until the network performance dropped below 0.001%. The ANN model achieved 100% success in the classification of walnut varieties and 79% ( R 2 ) success in weighting. These results once again demonstrate the potential of artificial intelligence applications in agriculture. In future studies, it is recommended to test different artificial intelligence algorithms for the classification and weighting of different nuts.

New Zealand Journal of Crop and Horticultural ScienceVol. 54(1)
Laboratoire de Chimie Organique (FR)
Zero hunger
Openalex Percentile: Top 55%
Smart Agriculture and AI
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Automated Walnut Classification and Weight Estimation Using Camera Images and ANN — İbrahim Hakkı Kadirhanoğullari · New Zealand Journal of Crop and Horticultural Science (2026) | TGRS Research Map | TGRS