Enhancement of optic cup detection from ARGALI using key points

Author

Wong, D.W.K. ; Tan, N.M. ; Liu, J. ; Tan, Z. ; Tang, Y. ; Zhang, Z. ; Lim, J.H. ; Ng, W.J. ; Li, H. ; Lu, S. ; Wong, T.Y.

Author_Institution

Inst. for Infocomm Res., A*STAR, Singapore, Singapore

fYear

2009

fDate

2-4 Dec. 2009

Firstpage

1

Lastpage

5

Abstract

We propose a method for improving the accuracy of the optic cup detected from the ARGALI system. This method makes use of key points from the branching points of large vessels, the analysis of intensity variation and kinks from small vessels to obtain an enhanced optic cup. Measures used to assess the detection of the optic cup showed an 11% and 40% improvement in the mean average overlap and relative area difference respectively over the previous method. The difference in the CDR error was also shown to be reduced to less than 0.1CDR units. The improved optic cup detection is more consistent with the clinical ground truth, facilitating its use in ARGALI for mass screening for glaucoma for early detection to save sight.

Keywords

blood vessels; eye; medical image processing; patient diagnosis; ARGALI system; CDR error; accuracy improvement; blood vessels; branching point; glaucoma; optic cup detection; Area measurement; Biomedical imaging; Biomedical optical imaging; Blindness; Diseases; Learning systems; Magnetic heads; Optical detectors; Optical losses; Retina;

fLanguage

English

Publisher

ieee

Conference_Titel

Biomedical and Pharmaceutical Engineering, 2009. ICBPE '09. International Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4244-4763-3

Electronic_ISBN

978-1-4244-4764-0

Type

conf

DOI

10.1109/ICBPE.2009.5384072

Filename

5384072