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The camera is now ready to produce bare images. The line profile tool is best used to evaluate a
bare image.
The following is an example line profile of a bare image of a white uniform object:
A good line profile of the bare image of a white and uniform object.
Whether a line profile is good or not is mainly determined by three factors:
1. Flatness
2. Height
3. Matching
1) Flatness: As line profiles represent a flat field in this case, the flatter the better it is. However,
due to the lens-shading effect, the light falls-off towards the edges and results in edges output
lower than the central area output. This leads to the edges' noise level being higher than the
central area within FFC applied images. A smaller aperture opening and longer focal length can
reduce the lens-shading effect. In some demanding applications, optimized low-shading lenses
should be considered.
68 • Operational Reference
Linea GigE Series Camera
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