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High Dynamic Range Image Processing for Retinal Color Fundus Photography
Journal article   Peer reviewed

High Dynamic Range Image Processing for Retinal Color Fundus Photography

D Brice Critser, Jody Troyer, S Scott Whitmore, Mahsaw Mansoor, Edwin M Stone, Jonathan F Russell and Ian C Han
Ophthalmic surgery, lasers & imaging retina, Vol.55(5), pp.263-269
05/2024
DOI: 10.3928/23258160-20240131-01
PMID: 38408222

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Abstract

Color fundus photography is an important imaging modality that is currently limited by a narrow dynamic range. We describe a post-image processing technique to generate high dynamic range (HDR) retinal images with enhanced detail. This was a retrospective, observational case series evaluating fundus photographs of patients with macular pathology. Photographs were acquired with three or more exposure values using a commercially available camera (Topcon 50-DX). Images were aligned and imported into HDR processing software (Photomatix Pro). Fundus detail was compared between HDR and raw photographs. Sixteen eyes from 10 patients (5 male, 5 female; mean age 59.4 years) were analyzed. Clinician graders preferred the HDR image 91.7% of the time (44/48 image comparisons), with good grader agreement (81.3%, 13/16 eyes). HDR fundus imaging is feasible using images from existing fundus cameras and may be useful for enhanced visualization of retinal detail in a variety of pathologic states. .

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