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Retinal images provide early signs of diabetic retinopathy, glaucoma, and hypertension. These signs can be investigated based on microaneurysms or smaller vessels. The diagnostic biomarkers are the change of vessel widths and angles especially at junctions, which are investigated using the vessel segmentation or tracking. Vessel paths may also be(More)
This letter presents a mathematical model of figure-ground articulation that takes into account both local and global gestalt laws and is compatible with the functional architecture of the primary visual cortex (V1). The local gestalt law of good continuation is described by means of suitable connectivity kernels that are derived from Lie group theory and(More)
Tree-like structures such as retinal images are widely studied in computer-aided diagnosis systems in large-scale screening programs. Despite several seg-mentation and tracking methods proposed in the literature , there still exist several limitations specifically when two or more curvilinear structures cross or bifur-cate, or in the presence of interrupted(More)
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