Transverse Resolution
The crossweb resolution of the image system is determined by the distance between two adjacent pixels on the inspected web in the crossweb direction. Let us call this distance the "crossweb pitch".
It only depends on the CCD sensor geometry and the optical setup.
In the case of the example of a 2048 pixel camera observing a 80cm wide web, the crossweb pitch is 0.39 mm.