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Digital Image Processing and Development of Machine Learning Models for the Discrimination of Corneal Pathology: An Experimental Model
Tecnológico de Monterrey, MEX.
Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science. (BigData@BTH)ORCID iD: 0000-0002-4390-411x
Tecnológico de Monterrey, MEX.
Tecnológico de Monterrey, MEX.
2021 (English)In: Photonics, ISSN 2304-6732, Vol. 8, no 4, article id 118Article in journal (Refereed) Published
Abstract [en]

Machine learning (ML) has an impressive capacity to learn and analyze a large volume of data. This study aimed to train different algorithms to discriminate between healthy and pathologic corneal images by evaluating digitally processed spectral-domain optical coherence tomography (SD-OCT) corneal images. A set of 22 SD-OCT images belonging to a random set of corneal pathologies was compared to 71 healthy corneas (control group). A binary classification method was applied where three approaches of ML were explored. Once all images were analyzed, representative areas from every digital image were also extracted, processed and analyzed for a statistical feature comparison between healthy and pathologic corneas. The best performance was obtained from transfer learning-support vector machine (TL-SVM) (AUC = 0.94, SPE 88%, SEN 100%) and transfer learning-random forest (TL- RF) method (AUC = 0.92, SPE 84%, SEN 100%), followed by convolutional neural network (CNN) (AUC = 0.84, SPE 77%, SEN 91%) and random forest (AUC = 0.77, SPE 60%, SEN 95%). The highest diagnostic accuracy in classifying corneal images was achieved with the TL-SVM and the TL-RF models. In image classification, CNN was a strong predictor. This pilot experimental study developed a systematic mechanized system to discern pathologic from healthy corneas using a small sample.

Place, publisher, year, edition, pages
MDPI, 2021. Vol. 8, no 4, article id 118
Keywords [en]
artificial intelligence; machine learning; cornea; SD-OCT; keratoconus; ectasia; keratitis; random forest; convolutional neural network; transfer learning
National Category
Medical Image Processing Signal Processing Computer Systems
Identifiers
URN: urn:nbn:se:bth-21390DOI: 10.3390/photonics8040118ISI: 000643501300001OAI: oai:DiVA.org:bth-21390DiVA, id: diva2:1554466
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open access

Available from: 2021-05-14 Created: 2021-05-14 Last updated: 2021-05-21Bibliographically approved

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Cheddad, Abbas

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