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Open AccessArticle

An Optimum Tea Fermentation Detection Model Based on Deep Convolutional Neural Networks

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African Center of Excellence in Internet of Things (ACEIoT), College of Science and Technology, University of Rwanda, P.O. Box, 3900 Kigali, Rwanda
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Department of Chemistry and Biochemistry, Moi University, P.O. Box, 3900-30100 Eldoret, Kenya
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African Center of Excellence in Phytochemicals, Textile and Renewable Energy (ACE II-PTRE), P.O. Box, 3900-30100 Eldoret, Kenya
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Sustainable Communication Networks, University of Bremen, 8359 Bremen, Germany
*
Author to whom correspondence should be addressed.
Received: 2 April 2020 / Revised: 28 April 2020 / Accepted: 28 April 2020 / Published: 30 April 2020
(This article belongs to the Special Issue Machine Learning in Image Analysis and Pattern Recognition)
Tea is one of the most popular beverages in the world, and its processing involves a number of steps which includes fermentation. Tea fermentation is the most important step in determining the quality of tea. Currently, optimum fermentation of tea is detected by tasters using any of the following methods: monitoring change in color of tea as fermentation progresses and tasting and smelling the tea as fermentation progresses. These manual methods are not accurate. Consequently, they lead to a compromise in the quality of tea. This study proposes a deep learning model dubbed TeaNet based on Convolution Neural Networks (CNN). The input data to TeaNet are images from the tea Fermentation and Labelme datasets. We compared the performance of TeaNet with other standard machine learning techniques: Random Forest (RF), K-Nearest Neighbor (KNN), Decision Tree (DT), Support Vector Machine (SVM), Linear Discriminant Analysis (LDA), and Naive Bayes (NB). TeaNet was more superior in the classification tasks compared to the other machine learning techniques. However, we will confirm the stability of TeaNet in the classification tasks in our future studies when we deploy it in a tea factory in Kenya. The research also released a tea fermentation dataset that is available for use by the community. View Full-Text
Keywords: machine learning; deep learning; image processing; classification; tea; fermentation machine learning; deep learning; image processing; classification; tea; fermentation
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MDPI and ACS Style

Kimutai, G.; Ngenzi, A.; Said, R.N.; Kiprop, A.; Förster, A. An Optimum Tea Fermentation Detection Model Based on Deep Convolutional Neural Networks. Data 2020, 5, 44.

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