Deep-Learning-Based Wireless Visual Sensor System for Shiitake Mushroom Sorting

The shiitake mushroom is the second-largest edible mushroom in the world, with a high nutritional and medicinal value. The surface texture of shiitake mushrooms can be quite different due to different growing environments, consequently leading to fluctuating market prices. To maximize the economic p...

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Main Authors: Junwen Deng, Yuhang Liu, Xinqing Xiao
Format: Article
Language:English
Published: MDPI AG 2022-06-01
Series:Sensors
Subjects:
Online Access:https://www.mdpi.com/1424-8220/22/12/4606
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author Junwen Deng
Yuhang Liu
Xinqing Xiao
author_facet Junwen Deng
Yuhang Liu
Xinqing Xiao
author_sort Junwen Deng
collection DOAJ
description The shiitake mushroom is the second-largest edible mushroom in the world, with a high nutritional and medicinal value. The surface texture of shiitake mushrooms can be quite different due to different growing environments, consequently leading to fluctuating market prices. To maximize the economic profit of the mushroom industry, it is necessary to sort the harvested mushrooms according to their qualities. This paper aimed to develop a deep-learning-based wireless visual sensor system for shiitake mushroom sorting, in which the visual detection was realized by the collection of images and cooperative transmission with the help of visual sensors and Wi-Fi modules, respectively. The model training process was achieved using Vision Transformer, then three data-augmentation methods, which were Random Erasing, RandAugment, and Label Smoothing, were applied under the premise of a small sample dataset. The training result of the final model turned out nearly perfect, with an accuracy rate reaching 99.2%. Meanwhile, the actual mushroom-sorting work using the developed system obtained an accuracy of 98.53%, with an 8.7 ms processing time for every single image. The results showed that the system could efficiently complete the sorting of shiitake mushrooms with a stable and high accuracy. In addition, the system could be extended for other sorting tasks based on visual features. It is also possible to combine binocular vision and multisensor technology with the current system to deal with sorting work that requires a higher accuracy and minor feature identification.
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spelling doaj.art-924d81e74f354676ae5e74a1f186d4122023-11-23T18:56:06ZengMDPI AGSensors1424-82202022-06-012212460610.3390/s22124606Deep-Learning-Based Wireless Visual Sensor System for Shiitake Mushroom SortingJunwen Deng0Yuhang Liu1Xinqing Xiao2College of Engineering, China Agricultural University, Beijing 100083, ChinaCollege of Engineering, China Agricultural University, Beijing 100083, ChinaCollege of Engineering, China Agricultural University, Beijing 100083, ChinaThe shiitake mushroom is the second-largest edible mushroom in the world, with a high nutritional and medicinal value. The surface texture of shiitake mushrooms can be quite different due to different growing environments, consequently leading to fluctuating market prices. To maximize the economic profit of the mushroom industry, it is necessary to sort the harvested mushrooms according to their qualities. This paper aimed to develop a deep-learning-based wireless visual sensor system for shiitake mushroom sorting, in which the visual detection was realized by the collection of images and cooperative transmission with the help of visual sensors and Wi-Fi modules, respectively. The model training process was achieved using Vision Transformer, then three data-augmentation methods, which were Random Erasing, RandAugment, and Label Smoothing, were applied under the premise of a small sample dataset. The training result of the final model turned out nearly perfect, with an accuracy rate reaching 99.2%. Meanwhile, the actual mushroom-sorting work using the developed system obtained an accuracy of 98.53%, with an 8.7 ms processing time for every single image. The results showed that the system could efficiently complete the sorting of shiitake mushrooms with a stable and high accuracy. In addition, the system could be extended for other sorting tasks based on visual features. It is also possible to combine binocular vision and multisensor technology with the current system to deal with sorting work that requires a higher accuracy and minor feature identification.https://www.mdpi.com/1424-8220/22/12/4606mushroom sortingdeep learningwireless sensor
spellingShingle Junwen Deng
Yuhang Liu
Xinqing Xiao
Deep-Learning-Based Wireless Visual Sensor System for Shiitake Mushroom Sorting
Sensors
mushroom sorting
deep learning
wireless sensor
title Deep-Learning-Based Wireless Visual Sensor System for Shiitake Mushroom Sorting
title_full Deep-Learning-Based Wireless Visual Sensor System for Shiitake Mushroom Sorting
title_fullStr Deep-Learning-Based Wireless Visual Sensor System for Shiitake Mushroom Sorting
title_full_unstemmed Deep-Learning-Based Wireless Visual Sensor System for Shiitake Mushroom Sorting
title_short Deep-Learning-Based Wireless Visual Sensor System for Shiitake Mushroom Sorting
title_sort deep learning based wireless visual sensor system for shiitake mushroom sorting
topic mushroom sorting
deep learning
wireless sensor
url https://www.mdpi.com/1424-8220/22/12/4606
work_keys_str_mv AT junwendeng deeplearningbasedwirelessvisualsensorsystemforshiitakemushroomsorting
AT yuhangliu deeplearningbasedwirelessvisualsensorsystemforshiitakemushroomsorting
AT xinqingxiao deeplearningbasedwirelessvisualsensorsystemforshiitakemushroomsorting