Title :
Support system for the preventive diagnosis of Hypertensive Retinopathy
Author :
Ortíz, Daniel ; Cubides, Mauricio ; Suárez, Andrés ; Zequera, Martha ; Quiroga, Julián ; Gómez, Jorge ; Arroyo, Nubia
Author_Institution :
Electron. Eng. Dept., Pontificia Univ. Javeriana, Bogota, Colombia
fDate :
Aug. 31 2010-Sept. 4 2010
Abstract :
The changes in diameter of retinal vessels are an important sign of diseases such as hypertension, arteriosclerosis and diabetes. Obtaining precise measurements of vascular widths is a critical and demanding process in automated retinal image analysis. This paper presents the development of a prototype for measuring the vessel diameters to calculate the arteriovenous ratio (AVR) by using different techniques including Gabor wavelet, gradients, morphological operations and Niblack. The diameter measurement is based on the image skeleton and the perpendicular segment of the vessel. An executable tool is developed using MATLAB® and the results are evaluated.
Keywords :
biomedical optical imaging; blood vessels; diseases; eye; mathematics computing; medical image processing; spatial variables measurement; Gabor wavelet; MATLAB; Niblack; arteriosclerosis; arteriovenous ratio; automated retinal image analysis; diabetes; diagnosis support system; gradients; hypertension; hypertensive retinopathy preventive diagnosis; morphological operations; retinal vessel diameter changes; vascular widths; vessel diameter measurement; vessel image skeleton; vessel perpendicular segment; Arteries; Biomedical imaging; Image segmentation; Optical imaging; Retina; Skeleton; Humans; Hypertensive Retinopathy; Image Interpretation, Computer-Assisted; Optic Disk; Retinal Artery; Retinal Vein;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE
Conference_Location :
Buenos Aires
Print_ISBN :
978-1-4244-4123-5
DOI :
10.1109/IEMBS.2010.5628047
