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基于胸部X光图像的COVID-19检测的多分辨率方法研究。

The investigation of multiresolution approaches for chest X-ray image based COVID-19 detection.

作者信息

Ismael Aras M, Şengür Abdulkadir

机构信息

Information Technology Department, College of Informatics, Sulaimani Polytechnic University, Sulaymaniyah, Iraq.

Electrical-Electronics Engineering Department, Technology Faculty, Firat University, Elazig, Turkey.

出版信息

Health Inf Sci Syst. 2020 Sep 29;8(1):29. doi: 10.1007/s13755-020-00116-6. eCollection 2020 Dec.


DOI:10.1007/s13755-020-00116-6
PMID:33014355
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7522455/
Abstract

COVID-19 is a novel virus, which has a fast spreading rate, and now it is seen all around the world. The case and death numbers are increasing day by day. Some tests have been used to determine the COVID-19. Chest X-ray and chest computerized tomography (CT) are two important imaging tools for determination and monitoring of COVID-19. And new methods have been searching for determination of the COVID-19. In this paper, the investigation of various multiresolution approaches in detection of COVID-19 is carried out. Chest X-ray images are used as input to the proposed approach. As recent trend in machine learning shifts toward the deep learning, we would like to show that the traditional methods such as multiresolution approaches are still effective. To this end, the well-known multiresolution approaches namely Wavelet, Shearlet and Contourlet transforms are used to decompose the chest X-ray images and the entropy and the normalized energy approaches are employed for feature extraction from the decomposed chest X-ray images. Entropy and energy features are generally accompanied with the multiresolution approaches in texture recognition applications. The extreme learning machines (ELM) classifier is considered in the classification stage of the proposed study. A dataset containing 361 different COVID-19 chest X-ray images and 200 normal (healthy) chest X-ray images are used in the experimental works. The performance evaluation is carried out by employing various metric namely accuracy, sensitivity, specificity and precision. As deep learning is mentioned, a comparison between proposed multiresolution approaches and deep learning approaches is also carried out. To this end, deep feature extraction and fine-tuning of pretrained convolutional neural networks (CNNs) are considered. For deep feature extraction, pretrained, ResNet50 model is employed. For classification of the deep features, the Support Vector Machines (SVM) classifier is used. The ResNet50 model is also used in the fine-tuning. The experimental works show that multiresolution approaches produced better performance than the deep learning approaches. Especially, Shearlet transform outperformed at all. 99.29% accuracy score is obtained by using Shearlet transform.

摘要

新型冠状病毒肺炎(COVID-19)是一种新型病毒,传播速度很快,目前在全球范围内都有出现。病例数和死亡数与日俱增。已经采用了一些检测方法来诊断COVID-19。胸部X线和胸部计算机断层扫描(CT)是诊断和监测COVID-19的两种重要影像工具。并且一直在探索诊断COVID-19的新方法。本文开展了各种多分辨率方法在COVID-19检测中的研究。胸部X线图像用作所提方法的输入。由于机器学习的最新趋势转向了深度学习,我们希望表明诸如多分辨率方法之类的传统方法仍然有效。为此,使用了著名的多分辨率方法,即小波变换、剪切波变换和轮廓波变换来分解胸部X线图像,并采用熵和归一化能量方法从分解后的胸部X线图像中提取特征。在纹理识别应用中,熵和能量特征通常与多分辨率方法相伴使用。在所提研究的分类阶段采用了极限学习机(ELM)分类器。实验工作中使用了一个包含361张不同的COVID-19胸部X线图像和200张正常(健康)胸部X线图像的数据集。通过采用各种指标,即准确率、灵敏度、特异性和精确率来进行性能评估。由于提到了深度学习,还对所提多分辨率方法和深度学习方法进行了比较。为此,考虑了预训练卷积神经网络(CNN)的深度特征提取和微调。对于深度特征提取,采用了预训练的ResNet50模型。对于深度特征的分类,使用了支持向量机(SVM)分类器。ResNet50模型也用于微调。实验工作表明,多分辨率方法比深度学习方法具有更好的性能。特别是,剪切波变换的性能最为突出。使用剪切波变换获得了99.29%的准确率得分。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/fdab31098472/13755_2020_116_Fig8_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/8b730207472c/13755_2020_116_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/146227f13b89/13755_2020_116_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/173884506ed5/13755_2020_116_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/fdab31098472/13755_2020_116_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/951e16382403/13755_2020_116_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/a06b956c1bdc/13755_2020_116_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/033a1c969868/13755_2020_116_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/c27109fe06e1/13755_2020_116_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/8b730207472c/13755_2020_116_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/146227f13b89/13755_2020_116_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/173884506ed5/13755_2020_116_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3ef3/7524980/fdab31098472/13755_2020_116_Fig8_HTML.jpg

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