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LEIA explains: What is the effect of flat field correction and why is it absolutely essential for the use of line scan cameras?

The invitation to our Machine Vision Technology Forum included the following quiz question. Let us give you the answer now!

What kind of problem, that usually occurs with line scan cameras, cannot be solved by using flat field correction (FFC)?

The possible answers:

a) Inhomogeneity of the sensor chip
b) Distortion caused by the optics
c) Intensity falloff towards the edges
d) Lens vignetting