Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Conference Papers Conference Paper Faculty Publications- Conference Papers Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource An Efficient Preprocessing Step for Retinal Vessel Segmentation via Optic Nerve Head Exclusion Subject The topic of the resource Fundus image enhancement; Optic nerve head; Preprocessing; Retinal vessel segmentation Description An account of the resource Retinal vessel segmentation plays a significant role for accurate diagnostics of ophthalmic diseases. In this paper, a novel preprocessing step for retinal vessel segmentation via optic nerve head exclusion is proposed. The idea relies in the fact that the exclusion of brighter optic nerve head prior to contrast enhancement process can better enhance the blood vessels for accurate segmentation. A histogram based intensity thresholding scheme is introduced in order to extract the optic nerve head which is then replaced by its surrounding background pixels. The efficacy of the proposed preprocessing step is established by segmenting the retinal vessels from the optic nerve head excluded image enhanced using CLAHE algorithm. Experimental works are carried out with fundus images from DRIVE database. It shows that 1%3% of improvement in terms of TPR measure is achieved. 2019, Springer Nature Singapore Pte Ltd. Creator An entity primarily responsible for making the resource Wahid F.F.; Raju G. Source A related resource from which the described resource is derived Communications in Computer and Information Science, Vol-1046, pp. 228-239. Publisher An entity responsible for making the resource available Springer Verlag Date A point or period of time associated with an event in the lifecycle of the resource 2019-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1007/978-981-13-9942-8_22" target="_blank" rel="noreferrer noopener">https://doi.org/10.1007/978-981-13-9942-8_22</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070225817&amp;doi=10.1007%2F978-981-13-9942-8_22&amp;partnerID=40&amp;md5=eb318c9659a6f21fa9fa481e480fffa4" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85070225817&amp;doi=10.1007%2f978-981-13-9942-8_22&amp;partnerID=40&amp;md5=eb318c9659a6f21fa9fa481e480fffa4</a> Rights Information about rights held in and over the resource Restricted Access Relation A related resource ISSN: 18650929; ISBN: 978-981139941-1 Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Conference paper Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Wahid F.F., Department of Information Technology, Kannur University, Kannur, 670567, Kerala, India; Raju G., Department of CSE, Faculty of Engineering, Christ (Deemed to be University), Bengaluru, 560764, Karnataka, India