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Systems and methods for automated enhancement of retinal images

  • US 8,885,901 B1
  • Filed: 04/30/2014
  • Issued: 11/11/2014
  • Est. Priority Date: 10/22/2013
  • Status: Active Grant
First Claim
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1. A computing system for enhancing a retinal image, the computing system comprising:

  • one or more hardware computer processors; and

    one or more storage devices configured to store software instructions configured for execution by the one or more hardware computer processors in order to cause the computing system to;

    access a medical retinal image for enhancement, the medical retinal image related to a subject;

    compute a median filtered image IBack,S with a median computed over a geometric shape, at single or multiple scales;

    determine whether intensity at a first pixel location in the medical retinal image I(x,y) is lower than intensity at a same position in the median filtered image IBack,S(x,y) for generating an enhanced image;

    if the intensity at the first pixel location is lower, then set a value at the first pixel location in the enhanced image to a value around a middle of a minimum and a maximum intensity value for the medical retinal image Cmid scaled by a ratio of intensity at medical retinal image to intensity in the median filtered image as expressed by

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