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Automatic segmentation of microaneurysms in retinal angiograms of diabetic patients

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3 Author(s)
Mendonca, A.M. ; INEB, Porto, Portugal ; Campilho, A.J. ; Nunes, J.M.

In this paper a method for automatic detection of microaneurysms in digital angiograms of the eye fundus is described. These lesions of the human retina, a characteristic of the earliest phases of diabetic retinopathy, present themselves in the angiographic images as small, round, hyperfluorescent objects. The proposed method includes initial pre-processing and enhancement steps, followed by object segmentation. In the final phase, microaneurysms are validated using two new criteria based on local intensity, contrast and shape relations. The combination of these local features with global image parameters makes possible a high degree of independence from image intensity characteristics

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Image Analysis and Processing, 1999. Proceedings. International Conference on

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