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Post-Processing 3/3<br />

Measuring multiple vessel segments :<br />

The measurement of average width of multiple non-branching<br />

vessels, at a range of distances from the center of the optical<br />

disk is performed. Each vessel segment initiates from the<br />

smaller to the larger circle. Depending on user selection, a<br />

number of statistics can be then estimated.<br />

Statistical Analysis in HR Images:<br />

The ratio of the quantities, CRAE and CRVE<br />

[14], which are determined by measurement<br />

on the arteries and veins detected in the<br />

region of interest respectively, were estimated.<br />

Such measures require the characterization of<br />

vessels, as to if they are veins or arteries and<br />

their mean widths. Hence, a GUI component<br />

is provided to facilitate this characterization by<br />

the medical professional.

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