Journal of Clinical and Experimental Ophthalmology
Open Access

Robyn Guymer

Publications

• Research Article
  Drusen Detection and Quantification for Early Identification of Age Related Macular Degeneration using Color Fundus Imaging
  Author(s): Alauddin Bhuiyan, Ryo Kawasaki, Mariko Sasaki, Ecosse Lamoureux, Kotagiri Ramamohanarao, Robyn Guymer, Tien Y Wong and Kanagasingam YogesanAlauddin Bhuiyan, Ryo Kawasaki, Mariko Sasaki, Ecosse Lamoureux, Kotagiri Ramamohanarao, Robyn Guymer, Tien Y Wong and Kanagasingam Yogesan
  
  Objective: To develop a method for detecting drusen and quantifying drusen size in macular region from standard color retinal images for early diagnosis of Age related Macular Degeneration (AMD). Materials and methods: Color retinal images were used which were captured by Canon D60 non-mydriatic camera for genetic and epidemiology study. Local intensity distribution, adaptive intensity thresholding and edge information were used to detect potential drusen areas. For validation, we considered 50 images with various types of drusen. For the drusen area segmentation accuracy (DAA), 12 images were selected, and an expert grader marked the drusen regions in pixel level. We then quantified the areas and compute the sensitivity and specificity by comparing the drusen detected output images with the hand-labeled ground truth (GT) images. .. View More»
  DOI: 10.4172/2155-9570.1000305

  Abstract PDF

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