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

fYear

2006

fDate

Aug. 30 2006-Sept. 3 2006

Firstpage

4722

Lastpage

4725

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE

Conference_Location

New York, NY

ISSN

1557-170X

Print_ISBN

1-4244-0032-5

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/IEMBS.2006.260567

Filename

4462856