Comparisons of angiograms (A-C), are maximum intensity enface projection OCTA using vED, aED, and bED, respectively; (D) is an averaged image of the above (A-C) angiograms; (E) is a binary vascular mask from the averaged image; (F) is a skeletonized vascular mask to define a ground truth. vED, voxel-based eigen-decomposition; aED, A-scans eigen-decomposition; bED, B-scans eigen-decomposition; OCTA, optical coherence tomography angiography.