Enhancement of vessel contours in retinal angiograms

Authors
Wanas, NM El-Sakka, MR Kamel, MS
Citation
Nm. Wanas et al., Enhancement of vessel contours in retinal angiograms, CAN J EL C, 25(3), 2000, pp. 99-103
Citations number
9
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
CANADIAN JOURNAL OF ELECTRICAL AND COMPUTER ENGINEERING-REVUE CANADIENNE DE GENIE ELECTRIQUE ET INFORMATIQUE
ISSN journal
08408688 → ACNP
Volume
25
Issue
3
Year of publication
2000
Pages
99 - 103
Database
ISI
SICI code
0840-8688(200007)25:3<99:EOVCIR>2.0.ZU;2-S
Abstract
Accurate and automatic assessment of angiograms has been sought as a powerf ul diagnostic tool in medical analysis such as diabetic retinopathy. These retinal angiogram images are characterized by poor local contrast. Applicat ions of existing edge-detection algorithms yield unsatisfactory results. In this paper, a set of cascaded linear directional filters is used to better enhance edges. Results show improvement in visual quality of the images.(1 ).