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• TITLE: On Lemon Defect Recognition with Visual Feature Extraction and Transfers Learning

  AUTHORS: Yizhi He, Tiancheng Zhu, Mingxuan Wang, Hanqing Lu

  KEYWORDS: Machine Learning, Visual Feature Extraction, Convolutional Neural Networks, Transfer Learning

  JOURNAL NAME: Journal of Data Analysis and Information Processing, Vol.9 No.4, September 2, 2021

  ABSTRACT: Applying machine learning to lemon defect recognition can improve the efficiency of lemon quality detection. This paper proposes a deep learning-based classification method with visual feature extraction and transfer learning to recognize defect lemons (i.e., green and mold defects). First, the data enhancement and brightness compensation techniques are used for data prepossessing. The visual feature extraction is used to quantify the defects and determine the feature variables as the bandit basis for classification. Then we construct a convolutional neural network with an embedded Visual Geometry Group 16 based (VGG16-based) network using transfer learning. The proposed model is compared with many benchmark models such as K-nearest Neighbor (KNN) and Support Vector Machine (SVM). Results show that the proposed model achieves the highest accuracy (95.44%) in the testing data set. The research provides a new solution for lemon defect recognition.