An Automatic Cognitive Graph-Based Segmentation for Detection of Blood Vessels in Retinal Images

Figure 4

Enhancement results produced by applying multiscale BTH ((a)–(e)) and BTH of multiscale multiorientation structuring elements ((f)–(j)) to CLAHE channel ((b) and (g)) of green channel [3, 4], Retinex channel ((c) and (h)) [5], median channel ((d) and (i)) [6], and proposed method ((e) and (j)).

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