Journal of Healthcare Engineering / 2017 / Article / Fig 6

Research Article

Blood Vessel Extraction in Color Retinal Fundus Images with Enhancement Filtering and Unsupervised Classification

Figure 6

Example results of different filters (Gabor, Gaussian, and Frangi) and binary result.
(a) Color retinal fundus image
(b) Preprocessed gray level intensity image
(c) The top-hat transform of Gabor filter output
(d) The top-hat transform of Gaussian filter output
(e) The top-hat transform of Frangi filter output
(f) Binary result using Gabor filter and K-means

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