Diabetic Retinopathy Grading by Digital Curvelet Transform

Figure 7

(a) Vessel mapped image, (b) showing end-points in predefined ROI, (c) removing end-points which are far from center of FAZ, (d) connecting selected end-points, (e) extracted FAZ from DCUT method, (f) subtracting vessels from original image, (g) applying morphological closing, (h) extracted FAZ by thresholding (g), (i) applying logical and between extracted FAZ in (e) and (h), (j) showing the final FAZ region.

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