Open AccessEnsemble learning‐based COVID‐19 detection by feature boosting in chest X‐ray images
Author(s) -
Upadhyay Kamini,
Agrawal Monika,
Deepak Desh
Publication year - 2020
Publication title -
iet image processing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.401
H-Index - 45
eISSN - 1751-9667
pISSN - 1751-9659
DOI - 10.1049/iet-ipr.2020.1127
Subject(s) - artificial intelligence , computer science , boosting (machine learning) , covid-19 , binary classification , pneumonia , logistic regression , pattern recognition (psychology) , machine learning , ensemble learning , identification (biology) , feature (linguistics) , medicine , support vector machine , disease , pathology , infectious disease (medical specialty) , biology , linguistics , philosophy , botany
The novel coronavirus has spread quite rapidly across the globe. The current testing rate is failing to match the exponential rate of rising cases. Moreover, the available testing methodologies are expensive and time‐consuming. A sensitive automated diagnosis is one of the biggest need of the hour. In the proposed work, the authors analyse the chest X‐ray images of normal, pneumonia and coronavirus disease‐2019 (COVID‐19) patients and process them to boost the COVID‐specific features (opacities etc.), which enable to perform sensitive identification of COVID‐19 patients. The sets of original and processed images are used with a stack of pre‐trained deep models for ensemble learning. They used VGG‐16 as base‐learners, trained with a diverse set of inputs followed by a logistic regression model, the meta learner, to combine the base‐learner predictions. The proposed fusion‐based model is trained and tested for three types of classification, TYPE‐I: binary (NORMAL/ABNORMAL), TYPE‐II: binary (PNEUMONIA/COVID‐19) and TYPE‐III: multi‐class (NORMAL/PNEUMONIA/COVID‐19). The diagnosis results are quite promising, with high accuracy and sensitivity values for all the cases. The proposed algorithm can be used to assist the medical experts for quick identification and isolation of COVID‐19 patients and thereby mitigating the effect of the virus.