Early detection of oesophageal cancer through colour contrast enhancement for data augmentation

Xiaohong Gao, Stephen Taylor, Wei Pang, Xin Lu, Barbara Braden

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Abstract

While white light imaging (WLI) of endoscopy has been set as the gold standard for screening and detecting oesophageal squamous cell cancer (SCC), the early signs of SCC are often missed (1 in 4) due to its subtle change of early onset of SCC. This study firstly enhances colour contrast of each of over 600 WLI images and their accompanying narrow band images (NBI) applying CIE colour appearance model CIECAM02. Then these augmented data together with the original images are employed to train a deep learning based system for classification of low grade dysplasia (LGD), SCC and high grade dysplasia (HGD). As a result, the averaged colour difference ( †E) measured using CIEL∗a∗b∗ increased from 11.60 to 14.46 for WLI and from 17.52 to 32.53 for NBI in appearance between suspected regions and their normal neighbours. When training a deep learning system with added enhanced contrasted WLI images, the sensitivity, specific and accuracy for LGD increases by 10.87%, 4.95% and 6.76% respectively. When training with enhanced both WLI and NBI images, these measures for LGD increases by 14.83%, 4.89% and 7.97% respectively, the biggest increase among three classes of SCC, HGD and LGD. In average, the sensitivity, specificity and accuracy for these three classes are 88.26%, 94.44% and 92.63% respectively for classification of SCC, HGD and LGD, being comparable or exceeding existing published work.

Original languageEnglish
Title of host publicationMedical Imaging 2022
Subtitle of host publicationComputer-Aided Diagnosis
EditorsKaren Drukker, Khan M. Iftekharuddin
PublisherSPIE
ISBN (Electronic)9781510649422
ISBN (Print)9781510649415
DOIs
Publication statusPublished - 4 Apr 2022
EventSPIE Medical Imaging 2022 - Virtual, Online
Duration: 21 Mar 202227 Mar 2022

Publication series

NameProceedings of SPIE
Volume12033
ISSN (Print)1605-7422
ISSN (Electronic)2410-9045

Conference

ConferenceSPIE Medical Imaging 2022
CityVirtual, Online
Period21/03/2227/03/22

Keywords

  • colour contrast
  • data augmentation
  • deep learning
  • Oesophageal cancer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

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