A Novel Deep Feature Extraction Approach Based on DenseNet201 and ResNet50 for Cotton Leaf Disease Detection

Year 2025, Volume: 16 Issue: 1, 125 - 138

Nursena Bayğın

https://doi.org/10.24012/dumf.1614458

Abstract

In this study, a new deep feature extraction approach is proposed for automatic detection of diseases observed on cotton plant leaves. In the proposed approach, feature extraction is performed using DenseNet201 and ResNet50 deep learning architectures. and the obtained feature vectors are combined. Then, the most informative features are selected with the Iterative Chi2 algorithm, and disease detection is performed using the Support Vector Machine (SVM) classifier. The developed model is tested on an open access dataset consisting of 2,137 cotton leaf images and 7 different classes (1 healthy, 6 diseased). 10-fold cross-validation and 80:20 hold-out cross-validation strategies are applied in the testing phase. As a result of the tests performed without using any data augmentation technique, 97.29% and 96.96% classification accuracies are obtained, respectively. The proposed approach makes significant contributions to the literature in terms of showing high success on the imbalanced dataset and providing a computationally lightweight architecture.

Keywords

Deep feature extraction, Cotton leaf diseases, Feature selection, Machine learning, Lightweight classification model

Pamuk Yaprağı Hastalıklarının Tespiti için DenseNet201 ve ResNet50 Tabanlı Yeni Bir Derin Özellik Çıkarım Yaklaşımı

Abstract

Bu çalışmada, pamuk bitkisi yapraklarında görülen hastalıkların otomatik tespiti için yeni bir derin özellik çıkarımı yaklaşımı önerilmiştir. Önerilen yaklaşımda, DenseNet201 ve ResNet50 derin öğrenme mimarileri kullanılarak özellik çıkarımı gerçekleştirilmiş ve elde edilen özellik vektörleri birleştirilmiştir. Daha sonra, Yinelemeli Chi2 algoritması ile en bilgilendirici özellikler seçilmiş ve Support Vector Machine (SVM) sınıflandırıcısı kullanılarak hastalık tespiti yapılmıştır. Geliştirilen model, 2137 pamuk yaprağı görüntüsünden oluşan ve 7 farklı sınıf içeren (1 sağlıklı, 6 hastalıklı) açık erişimli bir veri seti üzerinde test edilmiştir. Test aşamasında 10-fold cross-validation ve 80:20 hold-out cross-validation stratejileri uygulanmıştır. Herhangi bir veri artırma tekniği kullanılmadan gerçekleştirilen testler sonucunda, sırasıyla %97,29 ve %96,96 sınıflandırma doğruluğu elde edilmiştir. Önerilen yaklaşım, dengesiz veri seti üzerinde yüksek başarı göstermesi ve hesapsal olarak lightweight bir mimari sunması açısından literatüre önemli katkılar sağlamaktadır.

Keywords

Derin özellik çıkarımı, Pamuk yaprağı hastalıkları, Özellik seçimi, Makine öğrenmesi, Hafif siklet sınıflandırma modeli

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