What is calibration? Why do I have to calibrate my line scan camera before use?

Calibration process allows for an increase in the quality level of images acquired by a line scan camera.
Calibration is necessary because each sensor pixel has slight irregularities in light response: calibration procedure allows to get a uniform light response across all the pixels.
To find out how you can perform a camera calibration, please watch the Necta Calibration Wizard - part 1 video.