Zhiyang Ma

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Morphological changes of retinal vessels such as arteriovenous (AV) nicking are signs of many systemic diseases. In this paper, an automatic method for AV-nicking detection is proposed. The proposed method includes crossover point detection and AV-nicking identification. Vessel segmentation, vessel thinning, and feature point recognition are performed to(More)
Retinal vessel profiling in ocular fundus images is a basic tool to measure and detect retinal vascular structure, which can provide important information to clinical diagnosis and medical research. In this paper, a four-piecewise Gaussian model is proposed to describe the intensity distribution of retinal vascular cross-section. Eight hundred seventy three(More)
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