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A Light-Weight Practical Framework for Feces Detection and Trait Recognition

Fecal trait examinations are critical in the clinical diagnosis of digestive diseases, and they can effectively reveal various aspects regarding the health of the digestive system. An automatic feces detection and trait recognition system based on a visual sensor could greatly alleviate the burden o...

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Autores principales: Leng, Lu, Yang, Ziyuan, Kim, Cheonshik, Zhang, Yue
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7248729/
https://www.ncbi.nlm.nih.gov/pubmed/32384651
http://dx.doi.org/10.3390/s20092644
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author Leng, Lu
Yang, Ziyuan
Kim, Cheonshik
Zhang, Yue
author_facet Leng, Lu
Yang, Ziyuan
Kim, Cheonshik
Zhang, Yue
author_sort Leng, Lu
collection PubMed
description Fecal trait examinations are critical in the clinical diagnosis of digestive diseases, and they can effectively reveal various aspects regarding the health of the digestive system. An automatic feces detection and trait recognition system based on a visual sensor could greatly alleviate the burden on medical inspectors and overcome many sanitation problems, such as infections. Unfortunately, the lack of digital medical images acquired with camera sensors due to patient privacy has obstructed the development of fecal examinations. In general, the computing power of an automatic fecal diagnosis machine or a mobile computer-aided diagnosis device is not always enough to run a deep network. Thus, a light-weight practical framework is proposed, which consists of three stages: illumination normalization, feces detection, and trait recognition. Illumination normalization effectively suppresses the illumination variances that degrade the recognition accuracy. Neither the shape nor the location is fixed, so shape-based and location-based object detection methods do not work well in this task. Meanwhile, this leads to a difficulty in labeling the images for training convolutional neural networks (CNN) in detection. Our segmentation scheme is free from training and labeling. The feces object is accurately detected with a well-designed threshold-based segmentation scheme on the selected color component to reduce the background disturbance. Finally, the preprocessed images are categorized into five classes with a light-weight shallow CNN, which is suitable for feces trait examinations in real hospital environments. The experiment results from our collected dataset demonstrate that our framework yields a satisfactory accuracy of 98.4%, while requiring low computational complexity and storage.
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spelling pubmed-72487292020-08-13 A Light-Weight Practical Framework for Feces Detection and Trait Recognition Leng, Lu Yang, Ziyuan Kim, Cheonshik Zhang, Yue Sensors (Basel) Article Fecal trait examinations are critical in the clinical diagnosis of digestive diseases, and they can effectively reveal various aspects regarding the health of the digestive system. An automatic feces detection and trait recognition system based on a visual sensor could greatly alleviate the burden on medical inspectors and overcome many sanitation problems, such as infections. Unfortunately, the lack of digital medical images acquired with camera sensors due to patient privacy has obstructed the development of fecal examinations. In general, the computing power of an automatic fecal diagnosis machine or a mobile computer-aided diagnosis device is not always enough to run a deep network. Thus, a light-weight practical framework is proposed, which consists of three stages: illumination normalization, feces detection, and trait recognition. Illumination normalization effectively suppresses the illumination variances that degrade the recognition accuracy. Neither the shape nor the location is fixed, so shape-based and location-based object detection methods do not work well in this task. Meanwhile, this leads to a difficulty in labeling the images for training convolutional neural networks (CNN) in detection. Our segmentation scheme is free from training and labeling. The feces object is accurately detected with a well-designed threshold-based segmentation scheme on the selected color component to reduce the background disturbance. Finally, the preprocessed images are categorized into five classes with a light-weight shallow CNN, which is suitable for feces trait examinations in real hospital environments. The experiment results from our collected dataset demonstrate that our framework yields a satisfactory accuracy of 98.4%, while requiring low computational complexity and storage. MDPI 2020-05-06 /pmc/articles/PMC7248729/ /pubmed/32384651 http://dx.doi.org/10.3390/s20092644 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Leng, Lu
Yang, Ziyuan
Kim, Cheonshik
Zhang, Yue
A Light-Weight Practical Framework for Feces Detection and Trait Recognition
title A Light-Weight Practical Framework for Feces Detection and Trait Recognition
title_full A Light-Weight Practical Framework for Feces Detection and Trait Recognition
title_fullStr A Light-Weight Practical Framework for Feces Detection and Trait Recognition
title_full_unstemmed A Light-Weight Practical Framework for Feces Detection and Trait Recognition
title_short A Light-Weight Practical Framework for Feces Detection and Trait Recognition
title_sort light-weight practical framework for feces detection and trait recognition
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7248729/
https://www.ncbi.nlm.nih.gov/pubmed/32384651
http://dx.doi.org/10.3390/s20092644
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