An Effective Retinal Blood Vessel Segmentation by Using Automatic Random Walks Based on Centerline Extraction

<div>Illustration of the normalized gradient vector field in part regions of the vessels: (a) the selected region in the input image; (b) the normalized gradient vector field in the selected region.</div>

BioMed Research International

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Figure 4

Figure 4: An Effective Retinal Blood Vessel Segmentation by Using Automatic Random Walks Based on Centerline Extraction 