System and method for robust optic disk detection in retinal images using vessel structure and radon transform
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United States of America Patent
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Apr 28, 2009
Grant Date -
May 17, 2007
app pub date -
Oct 9, 2006
filing date -
Oct 12, 2005
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for optic disk detection in retinal images, includes: extracting a vessel tree from a retinal image; locating an optic disk in the retinal image using the vessel tree; enhancing a contrast of the optic disk; removing vessels from the contrast enhanced optic disk; detecting a boundary of the optic disk with vessels removed by generating an edge map; projecting the edge map at a plurality of angles by using a radon transform; and estimating a radius and center of the optic disk using the projections.
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