A sequential search-space shrinking using CNN transfer learning and a Radon projection pool for medical image retrieval

Amin Khatami, Morteza Babaie, H. R. Tizhoosh, Abbas Khosravi, Thanh Nguyen, Saeid Nahavandi

Research output: Contribution to journalArticlepeer-review

Abstract

Closing the semantic gap in medical image analysis is critical. Access to large-scale datasets might help to narrow the gap. However, large and balanced datasets may not always be available. On the other side, retrieving similar images from an archive is a valuable task to facilitate better diagnosis. In this work, we concentrate on forming a search space, consisting of the most similar images for a given query, to be used for a similarity-based search technique in a retrieval system. We propose a two-step hierarchical shrinking search space when local binary patterns are used. Transfer learning via convolutional neural networks is utilized for the first stage of search space shrinking, followed by creating a selection pool using Radon transform for further reduction. The difference between two orthogonal Radon projections is considered in the selection pool to extract more information. The IRMA dataset, from ImageCLEF initiative, containing 14,400 X-ray images, is used to validate the proposed scheme. We report a total IRMA error of 168.05 (or 90.30% accuracy) which is the best result compared with existing methods in the literature for this dataset when real-time processing is considered.

Original languageEnglish (US)
Pages (from-to)224-233
Number of pages10
JournalExpert Systems with Applications
Volume100
DOIs
StatePublished - Jun 15 2018

Keywords

  • CBIR
  • Content-based image retrieval
  • Deep learning
  • Medical imaging
  • Radon

ASJC Scopus subject areas

  • Engineering(all)
  • Computer Science Applications
  • Artificial Intelligence

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