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Abstract #18491 Published in IGR 3-3
Fast and robust optic disc detection using pyramidal decomposition and Hausdorff-based template matching
Lalonde M; Beaulieu M; Gagnon LIEEE Transactions on Medical Imaging 2001; 20: 1193-1200
The authors report on the design and testing of an image processing algorithm for the localization of the optic disc (OD) in low-resolution (about 20 μpixel) color fundus images. The design relies on the combination of two procedures: (1) a Hausdorff-based template matching technique on edge map, guided by, (2) a pyramidal decomposition for large scale object tracking. The two approaches are tested against a database of 40 images of various visual qualities and retinal pigmentations, as well as of normal and small pupils. An average error of 7% on OD center positioning is reached with no false detection. In addition, a confidence level is associated to the final detection that indicates the 'level of difficulty' the detector has to identify the OD position and shape.
Classification:
2.14 Optic disc (Part of: 2 Anatomical structures in glaucoma)