Automatic Detection and Classification of Malarial Retinopathy- Associated Retinal Whitening in Digital Retinal Images

  • Muhammad Usman Akram National University of Sciences & Technology, Islamabad.
  • Abu Bakar Nisar Alvi
  • Shoab Ahmed Khan

Abstract

Malarial retinopathy addresses diseases that are characterized by abnormalities in retinal fundus imaging. Macular whitening is one of the distinct signs of cerebral malaria but has hardly been explored as a critical bio-marker. The paper proposes a computerized detection and classification method for malarial retinopathy using retinal whitening as a bio-marker. The paper combines various statistical and color based features to form a sound feature set for accurate detection of retinal whitening. All features are extracted at image level and feature selection is performed to detect most discriminate features. A new method for macula location is also presented. The detected macula location is further used for grading of whitening as macular or peripheral whitening. Support vector machine along with radial basis function is used for classification of normal and malarial retinopathy patients. The evaluation is performed using a locally gathered dataset from malarial patients and it achieves an accuracy of 95% for detection of retinal whitening and 100% accuracy for grading of retinal whitening as macular
or non-macular. One of the major contributions of proposed method is grading of retinal whitening into macular or peripheral whitening.

Published
Oct 1, 2017
How to Cite
AKRAM, Muhammad Usman; ALVI, Abu Bakar Nisar; KHAN, Shoab Ahmed. Automatic Detection and Classification of Malarial Retinopathy- Associated Retinal Whitening in Digital Retinal Images. Mehran University Research Journal of Engineering & Technology, [S.l.], v. 36, n. 4, p. 16, oct. 2017. ISSN 2413-7219. Available at: <http://publications.muet.edu.pk/index.php/muetrj/article/view/44>. Date accessed: 17 dec. 2017.