CGBNet: A Deep Learning Framework for Compost Classification

Minimizing waste entering US landfills has become increasingly difficult. Composting organic waste can assist in reducing the effects of landfill pollution and greenhouse gas emissions. To help automate this process, we apply computer vision techniques to train a classifier to distinguish between gr...

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Main Authors: Suchisrit Gangopadhyay, Anthony Zhai
Format: Article
Language:English
Published: IEEE 2022-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9864578/
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author Suchisrit Gangopadhyay
Anthony Zhai
author_facet Suchisrit Gangopadhyay
Anthony Zhai
author_sort Suchisrit Gangopadhyay
collection DOAJ
description Minimizing waste entering US landfills has become increasingly difficult. Composting organic waste can assist in reducing the effects of landfill pollution and greenhouse gas emissions. To help automate this process, we apply computer vision techniques to train a classifier to distinguish between green and brown compost. The lack of labeled compost data and the challenges and dangers posed by collecting such data create a problem for the automation of composting. In this study, we propose CGBNet, a deep learning framework to differentiate between green and brown compost for the creation of healthy compost piles with an effective ratio of carbon to nitrogen. First, superclass and subclass classification are proposed as two methods of labeling and classifying data. Six deep learning models are then trained and evaluated on a newly formed dataset of 1,960 images using both label structures. Next, transfer learning is applied for feature extraction to boost performance using state-of-the-art deep learning models. The models showed improvements in performance generalization with less overfitting. The best-performing model, CGBNet, used transfer learning and subclass classification to obtain an accuracy of 95%, a 16% improvement in accuracy from the best performing superclass classification model trained without transfer learning. Superclass classification also showed significant improvements in performance and practicality with transfer learning, allowing for robust compost recognition systems to be more extensible while requiring less data and fewer parameters to train.
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spelling doaj.art-1a87e8399089415fadd52f4db556b8392022-12-22T04:31:21ZengIEEEIEEE Access2169-35362022-01-0110900689007810.1109/ACCESS.2022.32010999864578CGBNet: A Deep Learning Framework for Compost ClassificationSuchisrit Gangopadhyay0https://orcid.org/0000-0001-5685-5014Anthony Zhai1The Hun School of Princeton, Princeton, NJ, USAMontgomery High School, Skillman, NJ, USAMinimizing waste entering US landfills has become increasingly difficult. Composting organic waste can assist in reducing the effects of landfill pollution and greenhouse gas emissions. To help automate this process, we apply computer vision techniques to train a classifier to distinguish between green and brown compost. The lack of labeled compost data and the challenges and dangers posed by collecting such data create a problem for the automation of composting. In this study, we propose CGBNet, a deep learning framework to differentiate between green and brown compost for the creation of healthy compost piles with an effective ratio of carbon to nitrogen. First, superclass and subclass classification are proposed as two methods of labeling and classifying data. Six deep learning models are then trained and evaluated on a newly formed dataset of 1,960 images using both label structures. Next, transfer learning is applied for feature extraction to boost performance using state-of-the-art deep learning models. The models showed improvements in performance generalization with less overfitting. The best-performing model, CGBNet, used transfer learning and subclass classification to obtain an accuracy of 95%, a 16% improvement in accuracy from the best performing superclass classification model trained without transfer learning. Superclass classification also showed significant improvements in performance and practicality with transfer learning, allowing for robust compost recognition systems to be more extensible while requiring less data and fewer parameters to train.https://ieeexplore.ieee.org/document/9864578/Machine learningcompost classificationsuperclass classificationsubclass classificationtransfer learningconvolutional neural network
spellingShingle Suchisrit Gangopadhyay
Anthony Zhai
CGBNet: A Deep Learning Framework for Compost Classification
IEEE Access
Machine learning
compost classification
superclass classification
subclass classification
transfer learning
convolutional neural network
title CGBNet: A Deep Learning Framework for Compost Classification
title_full CGBNet: A Deep Learning Framework for Compost Classification
title_fullStr CGBNet: A Deep Learning Framework for Compost Classification
title_full_unstemmed CGBNet: A Deep Learning Framework for Compost Classification
title_short CGBNet: A Deep Learning Framework for Compost Classification
title_sort cgbnet a deep learning framework for compost classification
topic Machine learning
compost classification
superclass classification
subclass classification
transfer learning
convolutional neural network
url https://ieeexplore.ieee.org/document/9864578/
work_keys_str_mv AT suchisritgangopadhyay cgbnetadeeplearningframeworkforcompostclassification
AT anthonyzhai cgbnetadeeplearningframeworkforcompostclassification