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. 2015 Feb;5(1):125–135. doi: 10.3978/j.issn.2223-4292.2014.11.33

Figure 6.

Figure 6

Comparing the number of vessel segments in SV, SSAD and confocal images as detected by an active-contour based tracing algorithm using optimal parameter settings. As expected, the algorithm could detect more number of vessel segments in SSAD [376] compared to SV [348] due to the higher reconstruction quality. Additionally, tracing of the corresponding area from confocal image resulted in the detection of a relatively large number of vessel segments [888] which include the segments which are missed by both SV and SSAD due to the resolution limits of OCT. SV, speckle variance; SSAD, sparsity-integrated speckle anomaly detection; OCT, optical coherence tomography.