Fig 4. Enhancement results on selected region with vascular bifurcation and crossover produced by an eigenvalue-based method [28], a wavelet-based method [17] and the local phase method, respectively.

(A) A randomly chosen image from the DRIVE dataset. (B) Selected region with vascular bifurcation and crossover. (C) Eigenvalue-based enhancement results. (D) Wavelet-based enhancement results. (E) Local phase based enhancement results.