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A Pre-Compensation Algorithm for Different Optical Aberrations Using an Enhanced Wiener Filter and Edge Tapering Publisher



Mohammadpour S1 ; Mehridehnavi A1, 3 ; Rabbani H1, 2 ; Lakshminarayanan V3
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Authors Affiliations
  1. 1. Biomedical Engineering Department, Isfahan University of Medical Sciences, Isfahan, Iran
  2. 2. Medical Image and Signal Processing Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. School of Optometry, University of Waterloo, Waterloo, ON, Canada

Source: 2012 11th International Conference on Information Science, Signal Processing and their Applications, ISSPA 2012 Published:2012


Abstract

This article is about applying a new pre-compensation method on digital images displayed on computer monitors. The proposed method can be categorized as a deconvolution technique, based on human ocular point spread function (PSF). It's possible to obtain the ocular PSF from wavefront analyzers, an accessible optometric apparatus for measuring the optical aberrations of human eye. Optical aberration is any deviation of the optical wavefront from its ideal path. This pre-compensation algorithm that is based on an enhanced local Wiener filter and edge tapering was tested on 8 different types of aberrations. For this purpose, we used the Zernike polynomials to represent the mentioned 8 common varieties of ocular optical aberrations. © 2012 IEEE.
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2. A Comparison Between Wavefront-Optimized and Wavefront-Guided Photorefractive Keratectomy in Patients With Moderate-To-High Astigmatism: A Randomized Clinical Trial, Journal of Current Ophthalmology (2022)
3. Quantitative Analysis of Contrast Sensitivity to Improve Visual Acuity and Reduce Optical Aberrations, Journal of Isfahan Medical School (2016)
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