Enhanced Parallax Correction

Enhanced Parallax Correction (EPC) works with calculating two yields at the same time and uses the variance in between to ensure the highest accuracy on each scan.

Read more about Parallax from wikipedia;

Parallax is a displacement or difference in the apparent position of an object viewed along two different lines of sight, and is measured by the angle or semi-angle of inclination between those two lines. Due to foreshortening, nearby objects show a larger parallax than farther objects when observed from different positions, so parallax can be used to determine distances.