Title :
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
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;
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
DOI :
10.1109/ICBPE.2009.5384072
