title: Blood vessel segmentation methodologies in retinal images--a survey.
abstract: Retinal vessel segmentation algorithms are a fundamental component of automatic retinal disease screening systems. This work examines the blood vessel segmentation methodologies in two dimensional retinal images acquired from a fundus camera and a survey of techniques is presented. The aim of this paper is to review, analyze and categorize the retinal vessel extraction algorithms, techniques and methodologies, giving a brief description, highlighting the key points and the performance measures. We intend to give the reader a framework for the existing research; to introduce the range of retinal vessel segmentation algorithms; to discuss the current trends and future directions and summarize the open problems. The performance of algorithms is compared and analyzed on two publicly available databases (DRIVE and STARE) of retinal images using a number of measures which include accuracy, true positive rate, false positive rate, sensitivity, specificity and area under receiver operating characteristic (ROC) curve.
authors.affiliation: Digital Imaging Research Centre, Faculty of Science, Engineering and Computing, Kingston University London, London, United Kingdom. moazam.fraz@kingston.ac.uk
authors.forename: M M
authors.initials: MM
authors.lastname: Fraz
authors.forename: P
authors.initials: P
authors.lastname: Remagnino
authors.forename: A
authors.initials: A
authors.lastname: Hoppe
authors.forename: B
authors.initials: B
authors.lastname: Uyyanonvara
authors.forename: A R
authors.initials: AR
authors.lastname: Rudnicka
authors.forename: C G
authors.initials: CG
authors.lastname: Owen
authors.forename: S A
authors.initials: SA
authors.lastname: Barman
mesh_terms: D000465:Algorithms; D001808:Blood Vessels / Q000473:pathology*; D005654:Fundus Oculi; D006801:Humans