Retinal vessel tortuosity evaluation via circular hough transform

Farnoosh Ghadiri, Hamidreza Pourreza, Touka Banaee, Morteza Delgir

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Retinal vessel tortuosity has shown to be significantly associated with cardiovascular diseases such as hypertension and diabetes. Despite importance of this field a few techniques have been proposed yet. All previous methods rely on a vessel extraction phase, which its accuracy affects final output and also time consuming. Nobility of presented algorithm is to introduce a method for evaluating retinal vessel tortuosity without any explicit vessel detection. We use the Circular Hough Transform (CHT) based on gradient field of the retinal image. Each vessel curve is detected as a semi-circle by Hough transform and tortuosity of the curve is determined with the help of accumulated value of circle center and its radius. As there are no any specific database for tortuosity evaluation, the algorithm was tasted on database consisting of 40 images, mixture of DRIVE database and images from Khatam-Al-Anbia Hospital consisting of 40 retinal images, of which 20 were tortuous and 20 were non-tortuous. The proposed algorithm can achieve classification rate of 92% along with less computation time in compare of previous methods.

Original languageEnglish (US)
Title of host publication2011 18th Iranian Conference of Biomedical Engineering, ICBME 2011
Pages181-184
Number of pages4
DOIs
StatePublished - 2011
Externally publishedYes
Event2011 18th Iranian Conference of Biomedical Engineering, ICBME 2011 - Tehran, Iran, Islamic Republic of
Duration: Dec 14 2011Dec 16 2011

Publication series

Name2011 18th Iranian Conference of Biomedical Engineering, ICBME 2011

Conference

Conference2011 18th Iranian Conference of Biomedical Engineering, ICBME 2011
CountryIran, Islamic Republic of
CityTehran
Period12/14/1112/16/11

ASJC Scopus subject areas

  • Biomedical Engineering

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