TY - GEN
T1 - Retinal vessel tortuosity evaluation via circular hough transform
AU - Ghadiri, Farnoosh
AU - Pourreza, Hamidreza
AU - Banaee, Touka
AU - Delgir, Morteza
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84860006918&partnerID=8YFLogxK
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U2 - 10.1109/ICBME.2011.6168551
DO - 10.1109/ICBME.2011.6168551
M3 - Conference contribution
AN - SCOPUS:84860006918
SN - 9781467310055
T3 - 2011 18th Iranian Conference of Biomedical Engineering, ICBME 2011
SP - 181
EP - 184
BT - 2011 18th Iranian Conference of Biomedical Engineering, ICBME 2011
T2 - 2011 18th Iranian Conference of Biomedical Engineering, ICBME 2011
Y2 - 14 December 2011 through 16 December 2011
ER -