GMANet: Gradient Mask Attention Network for Finding Clearest Human Fecal Microscopic Image in Autofocus Process

The intelligent recognition of formed elements in microscopic images is a research hotspot. Whether the microscopic image is clear or blurred is the key factor affecting the recognition accuracy. Microscopic images of human feces contain numerous items, such as undigested food, epithelium, bacteria...

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Autores principales: Xiangzhou Wang, Lin Liu, Xiaohui Du, Jing Zhang, Guangming Ni, Juanxiu Liu
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Publicado: MDPI AG 2021
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spelling oai:doaj.org-article:3d3d8aa63f3b4a5d9b7d998a578416122021-11-11T15:19:25ZGMANet: Gradient Mask Attention Network for Finding Clearest Human Fecal Microscopic Image in Autofocus Process10.3390/app1121102932076-3417https://doaj.org/article/3d3d8aa63f3b4a5d9b7d998a578416122021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10293https://doaj.org/toc/2076-3417The intelligent recognition of formed elements in microscopic images is a research hotspot. Whether the microscopic image is clear or blurred is the key factor affecting the recognition accuracy. Microscopic images of human feces contain numerous items, such as undigested food, epithelium, bacteria and other formed elements, leading to a complex image composition. Consequently, traditional image quality assessment (IQA) methods cannot accurately assess the quality of fecal microscopic images or even identify the clearest image in the autofocus process. In response to this difficulty, we propose a blind IQA method based on a deep convolutional neural network (CNN), namely GMANet. The gradient information of the microscopic image is introduced into a low-level convolutional layer of the CNN as a mask attention mechanism to force high-level features to pay more attention to sharp regions. Experimental results show that the proposed network has good consistency with human visual properties and can accurately identify the clearest microscopic image in the autofocus process. Our proposed model, trained on fecal microscopic images, can be directly applied to the autofocus process of leucorrhea and blood samples without additional transfer learning. Our study is valuable for the autofocus task of microscopic images with complex compositions.Xiangzhou WangLin LiuXiaohui DuJing ZhangGuangming NiJuanxiu LiuMDPI AGarticleblind image quality assessmentdeep convolutional neural networkhuman fecal microscopic imagegradient mask attentionTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10293, p 10293 (2021)
institution DOAJ
collection DOAJ
language EN
topic blind image quality assessment
deep convolutional neural network
human fecal microscopic image
gradient mask attention
Technology
T
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
spellingShingle blind image quality assessment
deep convolutional neural network
human fecal microscopic image
gradient mask attention
Technology
T
Engineering (General). Civil engineering (General)
TA1-2040
Biology (General)
QH301-705.5
Physics
QC1-999
Chemistry
QD1-999
Xiangzhou Wang
Lin Liu
Xiaohui Du
Jing Zhang
Guangming Ni
Juanxiu Liu
GMANet: Gradient Mask Attention Network for Finding Clearest Human Fecal Microscopic Image in Autofocus Process
description The intelligent recognition of formed elements in microscopic images is a research hotspot. Whether the microscopic image is clear or blurred is the key factor affecting the recognition accuracy. Microscopic images of human feces contain numerous items, such as undigested food, epithelium, bacteria and other formed elements, leading to a complex image composition. Consequently, traditional image quality assessment (IQA) methods cannot accurately assess the quality of fecal microscopic images or even identify the clearest image in the autofocus process. In response to this difficulty, we propose a blind IQA method based on a deep convolutional neural network (CNN), namely GMANet. The gradient information of the microscopic image is introduced into a low-level convolutional layer of the CNN as a mask attention mechanism to force high-level features to pay more attention to sharp regions. Experimental results show that the proposed network has good consistency with human visual properties and can accurately identify the clearest microscopic image in the autofocus process. Our proposed model, trained on fecal microscopic images, can be directly applied to the autofocus process of leucorrhea and blood samples without additional transfer learning. Our study is valuable for the autofocus task of microscopic images with complex compositions.
format article
author Xiangzhou Wang
Lin Liu
Xiaohui Du
Jing Zhang
Guangming Ni
Juanxiu Liu
author_facet Xiangzhou Wang
Lin Liu
Xiaohui Du
Jing Zhang
Guangming Ni
Juanxiu Liu
author_sort Xiangzhou Wang
title GMANet: Gradient Mask Attention Network for Finding Clearest Human Fecal Microscopic Image in Autofocus Process
title_short GMANet: Gradient Mask Attention Network for Finding Clearest Human Fecal Microscopic Image in Autofocus Process
title_full GMANet: Gradient Mask Attention Network for Finding Clearest Human Fecal Microscopic Image in Autofocus Process
title_fullStr GMANet: Gradient Mask Attention Network for Finding Clearest Human Fecal Microscopic Image in Autofocus Process
title_full_unstemmed GMANet: Gradient Mask Attention Network for Finding Clearest Human Fecal Microscopic Image in Autofocus Process
title_sort gmanet: gradient mask attention network for finding clearest human fecal microscopic image in autofocus process
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/3d3d8aa63f3b4a5d9b7d998a57841612
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AT linliu gmanetgradientmaskattentionnetworkforfindingclearesthumanfecalmicroscopicimageinautofocusprocess
AT xiaohuidu gmanetgradientmaskattentionnetworkforfindingclearesthumanfecalmicroscopicimageinautofocusprocess
AT jingzhang gmanetgradientmaskattentionnetworkforfindingclearesthumanfecalmicroscopicimageinautofocusprocess
AT guangmingni gmanetgradientmaskattentionnetworkforfindingclearesthumanfecalmicroscopicimageinautofocusprocess
AT juanxiuliu gmanetgradientmaskattentionnetworkforfindingclearesthumanfecalmicroscopicimageinautofocusprocess
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