专利内容由知识产权出版社提供
专利名称：OPTIC DISC DETECTION IN RETINAL
AUTOFLUORESCENCE IMAGES
发明人：Kanishka T. Jayasundera,Matthew K.
Johnson-Roberson
申请号：US15165400申请日：20160526
公开号：US20160345819A1公开日：20161201
专利附图：
摘要：The invention relates to methods and systems for automatically detecting anoptic disc in a retinal fundus autofluorescence image. A monochromatic image of a retina
is obtained by stimulated autofluorescence. The image is processed using filters andmachine learning to identify blood vessel segments and to identify pixels as possibleoptic disc pixels. The possible optic disc pixels are grouped into clusters, and a best fitcircle (or portion thereof lying within the image) is fitted to each cluster. The circle maybe enlarged to improve image contrast at the circumference of the circle. Blood vesselsegments that intersect the circle are identified, and metrics are derived from suchintersecting blood vessel segments. These metrics are assessed by machine learningprocesses to determine the probability that each cluster contains the optic disc, and thecontours of the optic disc are further determined by analysis of the possible optic discpixels.
申请人：THE REGENTS OF THE UNIVERSITY OF MICHIGAN
地址：Ann Arbor MI US
国籍：US
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