Title :
Registration of Retinal Angiograms Using Self Organizing Maps
Author :
Asvestas, P.A. ; Matsopoulos, G.K. ; Delibasis, K.K. ; Mouravliansky, N.A.
Author_Institution :
Inst. of Commun. & Comput. Syst, Athens
fDate :
Aug. 30 2006-Sept. 3 2006
Abstract :
In this paper, an automatic method for registering multimodal retinal images is presented. The method consists of three steps: the vessel centerline detection and extraction of bifurcation points only in the reference image, the automatic correspondence of bifurcation points in the two images using a novel implementation of the self organized maps (SOMs) and the extraction of the parameters of the affine transform using the previously obtained correspondences. The proposed registration algorithm was tested on 24 multimodal retinal pairs and the obtained results show an advantageous performance in terms of accuracy with respect to the manual registration
Keywords :
biomedical optical imaging; blood vessels; eye; feature extraction; image registration; medical image processing; self-organising feature maps; affine transform; automatic method; bifurcation points; fluoroscein angiogram; multimodal retinal images; parameter extraction; registration algorithm; retinal angiogram registration; self organizing maps; vessel centerline detection; Bifurcation; Charge coupled devices; Charge-coupled image sensors; Filters; Image storage; Pixel; Radio frequency; Retina; Self organizing feature maps; Testing; Retinal registration; Self Organized Maps; automatic correspondence; vessel centerline;
Conference_Titel :
Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE
Conference_Location :
New York, NY
Print_ISBN :
1-4244-0032-5
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2006.260567
